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The Khoisan languages (; also Khoesan or Khoesaan) are a group of
African languages The languages of Africa are divided into several major language families: * Niger–Congo or perhaps Atlantic–Congo languages (includes Bantu and non-Bantu, and possibly Mande and others) are spoken in West, Central, Southeast and Souther ...
originally classified together by
Joseph Greenberg Joseph Harold Greenberg (May 28, 1915 – May 7, 2001) was an American linguist, known mainly for his work concerning linguistic typology and the genetic classification of languages. Life Early life and education Joseph Greenberg was born on ...
. Khoisan languages share
click consonants Click consonants, or clicks, are speech sounds that occur as consonants in many languages of Southern Africa and in three languages of East Africa. Examples familiar to English-speakers are the '' tut-tut'' (British spelling) or '' tsk! tsk!'' ...
and do not belong to other African
language families A language family is a group of languages related through descent from a common ''ancestral language'' or ''parental language'', called the proto-language of that family. The term "family" reflects the tree model of language origination in hi ...
. For much of the 20th century, they were thought to be genealogically related to each other, but this is no longer accepted. They are now held to comprise three distinct
language families A language family is a group of languages related through descent from a common ''ancestral language'' or ''parental language'', called the proto-language of that family. The term "family" reflects the tree model of language origination in hi ...
and two language isolates. All Khoisan languages but two are indigenous to southern Africa and belong to three language families. The Khoe family appears to have migrated to southern Africa not long before the Bantu expansion. Ethnically, their speakers are the
Khoikhoi Khoekhoen (singular Khoekhoe) (or Khoikhoi in the former orthography; formerly also '' Hottentots''"Hottentot, n. and adj." ''OED Online'', Oxford University Press, March 2018, www.oed.com/view/Entry/88829. Accessed 13 May 2018. Citing G. S. ...
and the San (Bushmen). Two languages of east Africa, those of the Sandawe and Hadza, originally were also classified as Khoisan, although their speakers are ethnically neither Khoikhoi nor San. Before the Bantu expansion, Khoisan languages, or languages like them, were likely spread throughout southern and eastern Africa. They are currently restricted to the
Kalahari Desert The Kalahari Desert is a large semi-arid sandy savanna in Southern Africa extending for , covering much of Botswana, and parts of Namibia and South Africa. It is not to be confused with the Angolan, Namibian, and South African Namib coastal d ...
, primarily in
Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...
and
Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label= Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalaha ...
, and to the
Rift Valley A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift. Rifts are formed as a result of the pulling apart of the lithosphere due to extensional tectonics. The linear d ...
in central
Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands ...
. Most of the languages are
endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and in ...
, and several are
moribund Moribund refers to a literal or figurative state near death. Moribund may refer to: * ''Moribund'' (album), a 2006 album by the Norwegian black metal band Koldbrann * " Le Moribond", a song by Jacques Brel known in English as "Seasons in the Sun ...
or extinct. Most have no written record. The only widespread Khoisan language is
Khoekhoe Khoekhoen (singular Khoekhoe) (or Khoikhoi in the former orthography; formerly also '' Hottentots''"Hottentot, n. and adj." ''OED Online'', Oxford University Press, March 2018, www.oed.com/view/Entry/88829. Accessed 13 May 2018. Citing G. S. ...
(also known as Khoekhoegowab, Nàmá or Damara) of Namibia, Botswana and South Africa, with a quarter of a million speakers; Sandawe in Tanzania is second in number with some 40–80,000, some monolingual; and the ǃKung language of the northern Kalahari spoken by some 16,000 or so people. Language use is quite strong among the 20,000 speakers of
Naro Naro ( scn, Naru ) is a ''comune'' in the province of Agrigento, on the island of Sicily, Italy. It is bounded by the comuni of Agrigento, Caltanissetta, Camastra, Campobello di Licata, Canicattì, Castrofilippo, Delia, Italy, Delia, Favara, Ag ...
, half of whom speak it as a second language. Khoisan languages are best known for their use of click consonants as
phoneme In phonology and linguistics, a phoneme () is a unit of sound that can distinguish one word from another in a particular language. For example, in most dialects of English, with the notable exception of the West Midlands and the north-wes ...
s. These are typically written with characters such as ǃ and ǂ. Clicks are quite versatile as consonants, as they involve two articulations of the tongue which can operate partially independently. Consequently, the languages with the greatest numbers of consonants in the world are Khoisan. The
Juǀʼhoan language Juǀʼhoan (, ), also known as Southern or Southeastern ǃKung or ǃXun, is the southern variety of the ǃKung dialect continuum, spoken in northeastern Namibia and the Northwest District of Botswana by San Bushmen who largely identify themselv ...
has 48 click consonants among nearly as many non-click consonants, strident and
pharyngealized Pharyngealization is a secondary articulation of consonants or vowels by which the Human pharynx, pharynx or epiglottis is constricted during the articulation of the sound. IPA symbols In the International Phonetic Alphabet, pharyngealization can ...
vowels, and four tones. The ǃXóõ and ǂHõã languages are even more complex.


Validity

Khoisan was proposed as one of the four families of
African languages The languages of Africa are divided into several major language families: * Niger–Congo or perhaps Atlantic–Congo languages (includes Bantu and non-Bantu, and possibly Mande and others) are spoken in West, Central, Southeast and Souther ...
in
Joseph Greenberg Joseph Harold Greenberg (May 28, 1915 – May 7, 2001) was an American linguist, known mainly for his work concerning linguistic typology and the genetic classification of languages. Life Early life and education Joseph Greenberg was born on ...
's classification (1949–1954, revised in 1963). However, linguists who study Khoisan languages reject their unity, and the name "Khoisan" is used by them as a term of convenience without any implication of linguistic validity, much as " Papuan" and "
Australian Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal A ...
" are. It has been suggested that the similarities of the Tuu and Kxʼa families are due to a southern African Sprachbund rather than a genealogical relationship, whereas the Khoe (or perhaps Kwadi–Khoe) family is a more recent migrant to the area, and may be related to Sandawe in East Africa.Güldemann, Tom and Edward D. Elderkin (forthcoming)
On external genealogical relationships of the Khoe family.
' In Brenzinger, Matthias and Christa König (eds.), ''Khoisan Languages and Linguistics: the Riezlern Symposium 2003.'' Quellen zur Khoisan-Forschung 17. Köln: Rüdiger Köppe.
Ernst Oswald Johannes Westphal Ernst Oswald Johannes Gotthard Gotthilf Westphal ( Khalava in Venda, South Africa, 1919 - Bredasdorp near Cape Town, South Africa, 27 November 1990), was a South African linguist and an expert in Bantu and Khoisan languages. From 1949 to 1962 he ...
is known for his early rejection of the Khoisan language family ( Starostin 2003). Bonny Sands (1998) concluded that the family is not demonstrable with current evidence. Anthony Traill at first accepted Khoisan (Traill 1986), but by 1998 concluded that it could not be demonstrated with current data and methods, rejecting it as based on a single typological criterion: the presence of clicks. Dimmendaal (2008) summarized the general view with, "it has to be concluded that Greenberg's intuitions on the genetic unity of Khoisan could not be confirmed by subsequent research. Today, the few scholars working on these languages treat the three outhern groupsas independent language families that cannot or can no longer be shown to be genetically related" (p. 841). Starostin (2013) accepts a relationship between Sandawe and Khoi is plausible, as is one between Tuu and Kxʼa, but sees no indication of a relationship between Sandawe and Khoi on the one hand and Tuu and Kxʼa on the other, or between any of them and Hadza. Janina Brutt-Griffler claims, "given that such colonial borders were generally arbitrarily drawn, they grouped large numbers of ethnic groups that spoke many languages." She hypothesizes that this took place within efforts to prevent the spread of English during European colonization and prevent the entrance of the majority into the middle class.


Khoisan language variation

Anthony Traill noted the Khoisan languages' extreme variation. Despite their shared clicks, the Khoisan languages diverge significantly from each other. Traill demonstrated this linguistic diversity in the data presented in the below table. The first two columns include words from the two Khoisan language isolates, Sandawe and Hadza. The following three are languages from the Khoe family, the Kxʼa family, and the Tuu family, respectively.


Families

The branches that were once considered part of so-called Khoisan are now considered independent families, since it has not been demonstrated that they are related according to the standard comparative method. See
Khoe languages The Khoi languages are the largest of the non- Bantu language families indigenous to Southern Africa. They were once considered to be a branch of a Khoisan language family, and were known as Central Khoisan in that scenario. Though Khoisan is ...
for speculations on the linguistic history of the region.


Hadza

With about 800 speakers in Tanzania, Hadza is no longer seen as a Khoisan language and appears to be unrelated to any other language. Genetically, the Hadza people are unrelated to the Khoisan peoples of Southern Africa, and their closest relatives may be among the
Pygmies In anthropology, pygmy peoples are ethnic groups whose average height is unusually short. The term pygmyism is used to describe the phenotype of endemic short stature (as opposed to disproportionate dwarfism occurring in isolated cases in a pop ...
of Central Africa.


Sandawe

There is some indication that Sandawe (about 40,000 speakers in Tanzania) may be related to the Khoe family, such as a congruent pronominal system and some good Swadesh-list matches, but not enough to establish regular sound correspondences. Sandawe is not related to Hadza, despite their proximity.


Khoe

The Khoe family is both the most numerous and diverse family of Khoisan languages, with seven living languages and over a quarter million speakers. Although little Kwadi data is available, proto-Khoe–Kwadi reconstructions have been made for pronouns and some basic vocabulary. *? Khoe–Kwadi ** Kwadi (extinct) **
Khoe Maharishi International University (MIU), formerly Maharishi University of Management, is a private university in Fairfield, Iowa. It was founded in 1973 by Maharishi Mahesh Yogi and features a "consciousness-based education" system that include ...
***
Khoekhoe Khoekhoen (singular Khoekhoe) (or Khoikhoi in the former orthography; formerly also '' Hottentots''"Hottentot, n. and adj." ''OED Online'', Oxford University Press, March 2018, www.oed.com/view/Entry/88829. Accessed 13 May 2018. Citing G. S. ...
This branch appears to have been affected by the Kxʼa–Tuu '' sprachbund''. **** Nama (ethnonyms Khoekhoen, Nama, Damara) (a dialect cluster including ǂAakhoe and Haiǁom) **** Eini (extinct) ****South Khoekhoe *****
Korana The Korana is a river in central Croatia and west Bosnia and Herzegovina. The river has a total length of and watershed area of . The river's name is derived from Proto-Indo-European ''*karr-'' 'rock'. It was recorded in the 13th century as '' ...
(moribund) ***** Xiri (moribund; a dialect cluster) *** Tshu–Khwe (or ''Kalahari)'' Many of these languages have undergone partial click loss. ****East Tshu–Khwe (East Kalahari) ***** Shua (a dialect cluster including Deti, Tsʼixa, ǀXaise, and Ganádi) ***** Tsoa (a dialect cluster including Cire Cire and Kua) ****West Tshu–Khwe (West Kalahari) ***** Kxoe (a dialect cluster including ǁAni and Buga) *****
Naro Naro ( scn, Naru ) is a ''comune'' in the province of Agrigento, on the island of Sicily, Italy. It is bounded by the comuni of Agrigento, Caltanissetta, Camastra, Campobello di Licata, Canicattì, Castrofilippo, Delia, Italy, Delia, Favara, Ag ...
(a dialect cluster, including ǂHaba) *****Gǁana–Gǀwi (a dialect cluster including Gǁana and Gǀwi) A Haiǁom language is listed in most Khoisan references. A century ago the Haiǁom people spoke a Ju dialect, probably close to ǃKung, but they now speak a divergent dialect of Nama. Thus their language is variously said to be extinct or to have 18,000 speakers, to be Ju or to be Khoe. (Their numbers have been included under Nama above.) They are known as the ''Saa'' by the Nama, and this is the source of the word '' San''.


Tuu

The Tuu family consists of two language clusters, which are related to each other at about the distance of Khoekhoe and Tshukhwe within Khoe. They are typologically very similar to the Kxʼa languages (below), but have not been demonstrated to be related to them genealogically (the similarities may be an areal feature). *Tuu **Taa *** ǃXoon (4200 speakers. A dialect cluster.) *** Lower Nossob (Two dialects, ǀʼAuni and ǀHaasi. Extinct.) **ǃKwi *** Nǁng (A dialect cluster. Moribund.) *** ǀXam (A dialect cluster. Extinct.) *** ǂUngkue (A dialect cluster. Extinct.) *** ǁXegwi (Extinct.)


Kxʼa

The Kxʼa family is a relatively distant relationship formally demonstrated in 2010. *Kxʼa ** ǂʼAmkoe (200 speakers, Botswana. Moribund. A dialect cluster of Nǃaqriaxe, (Eastern) ǂHoan, and Sasi) ** ǃKung (also ''ǃXun'' or ''Ju,'' formerly ''Northern Khoisan)'' is a dialect cluster. (~45,000 speakers.) Juǀʼhoan is the best-known dialect.


Classification by Starostin (2013)

Starostin (2013) gives the following classification of the Khoisan "
macrofamily In historical linguistics, a macrofamily, also called a superfamily or phylum, is a proposed genetic relationship grouping together language families (also isolates) in a larger scale classification. Campbell, Lyle and Mixco, Mauricio J. (2007), ' ...
," which he considers to be a single coherent
language family A language family is a group of languages related through descent from a common ''ancestral language'' or ''parental language'', called the proto-language of that family. The term "family" reflects the tree model of language origination in h ...
.Starostin, Georgiy C. 2013
Языки Африки. Опыт построения лексикостатистической классификации. Т. 1: Методология. Койсанские языки
/ Languages of Africa: an attempt at a lexicostatistical classification. Volume 1: Methodology; Khoisan languages. Moscow: Языки славянской культуры / LRC Press. 510 p.
However, this classification is not widely accepted. * Hadza * Macro-Khoisan (excl. Hadza) ** Sandawe-Khoi-Kwadi *** Sandawe *** Khoi-Kwadi **** Kwadi ****
Khoe Maharishi International University (MIU), formerly Maharishi University of Management, is a private university in Fairfield, Iowa. It was founded in 1973 by Maharishi Mahesh Yogi and features a "consciousness-based education" system that include ...
(= Khoi) *****
Khoikhoi Khoekhoen (singular Khoekhoe) (or Khoikhoi in the former orthography; formerly also '' Hottentots''"Hottentot, n. and adj." ''OED Online'', Oxford University Press, March 2018, www.oed.com/view/Entry/88829. Accessed 13 May 2018. Citing G. S. ...
***** Kalahari Khoi ** Peripheral Khoisan *** Southern Khoisan (= !Kwi-Taa ~ Tuu) **** !Kwi ****
Taa Trans Australia Airlines (TAA), renamed Australian Airlines in 1986, was one of the two major Australian domestic airlines between its inception in 1946 and its merger with Qantas in September 1992. As a result of the "COBRA" (or Common Brand ...
*** Ju-hoan **** Western Hoan **** Northern Khoisan (= Ju)


Other "click languages"

Not all languages using clicks as phonemes are considered Khoisan. Most others are neighboring Bantu languages in southern Africa: the Nguni languages (
Xhosa Xhosa may refer to: * Xhosa people, a nation, and ethnic group, who live in south-central and southeasterly region of South Africa * Xhosa language, one of the 11 official languages of South Africa, principally spoken by the Xhosa people See als ...
, Zulu,
Swazi Swazi may refer to: * Swazi people, a people of southeastern Africa * Swazi language * Eswatini Eswatini ( ; ss, eSwatini ), officially the Kingdom of Eswatini and formerly named Swaziland ( ; officially renamed in 2018), is a landlocked coun ...
,
Phuthi Phuthi (''Síphùthì'') is a Nguni Bantu language spoken in southern Lesotho and areas in South Africa adjacent to the same border. The closest substantial living relative of Phuthi is Swati (or ''Siswati''), spoken in Eswatini and the Mp ...
, and Northern Ndebele);
Sotho Sotho may refer to: *Sotho people (or ''Basotho''), an African ethnic group principally resident in South Africa, Lesotho and southern Botswana * Sotho language (''Sesotho'' or ''Southern Sotho''), a Bantu language spoken in southern Africa, an off ...
;
Yeyi Yeyi may refer to: *Ye County, Henan, China, formerly known as Yeyi * Yeyi people *Yeyi language Yeyi (autoethnonym ''Shiyɛyi'') is a Bantu languages, Bantu language spoken by many of the approximately 50,000 Yeyi people along the Okavango Rive ...
in
Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label= Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalaha ...
; and
Mbukushu Mbukushu is a traditional Kavango kingdom in what is today Namibia. Its people speak the Mbukushu language Mbukushu or Thimbukushu is a Bantu language spoken by 45,000 people along the Okavango River in Namibia, where it is a national language, ...
, Kwangali, and
Gciriku Gciriku is a traditional Kavango kingdom in what is today Namibia. Its people speak the Gciriku language. The Gciriku (Rugciriku: ''vaGciriku'') are one of the many ethnic groups in Namibia with an estimated population of 20 000. The Gciriku main ...
in the
Caprivi Strip The Caprivi Strip, also known simply as Caprivi, is a geographic salient protruding from the northeastern corner of Namibia. It is surrounded by Botswana to the south and Angola and Zambia to the north. Namibia, Botswana and Zambia meet at a s ...
. Clicks are spreading to a few additional neighboring languages. Of these languages, Xhosa, Zulu, Ndebele and Yeyi have intricate systems of click consonants; the others, despite the click in the name ''Gciriku,'' more rudimentary ones. There is also the
South Cushitic The South Cushitic or Rift languages of Tanzania are a branch of the Cushitic languages. The most numerous is Iraqw, with half a million speakers. These languages are believed to have been originally spoken by Southern Cushitic agro-pastoralist ...
language Dahalo in
Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi ...
, which has dental clicks in a few score words, and an extinct and presumably artificial
Australian Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal A ...
ritual language called
Damin Damin ( in the practical orthography of Lardil) was a ceremonial language register used by the advanced initiated men of the aboriginal Lardil ( in the practical orthography) and Yangkaal peoples of northern Australia. Both inhabit island ...
, which had only nasal clicks. The Bantu languages adopted the use of clicks from neighboring, displaced, or absorbed Khoisan populations (or from other Bantu languages), often through intermarriage, while the Dahalo are thought to have retained clicks from an earlier language when they shifted to speaking a Cushitic language; if so, the pre-Dahalo language may have been something like Hadza or Sandawe. Damin is an invented ritual language, and has nothing to do with Khoisan. These are the only languages known to have clicks in normal vocabulary. Occasionally other languages are said by laypeople to have "click" sounds. This is usually a misnomer for ejective consonants, which are found across much of the world, or is a reference to
paralinguistic Paralanguage, also known as vocalics, is a component of meta-communication that may modify meaning, give nuanced meaning, or convey emotion, by using techniques such as prosody, pitch, volume, intonation, etc. It is sometimes defined as relatin ...
use of clicks such as English ''tsk! tsk!''


Comparative vocabulary

Sample basic vocabulary for Khoisan language families:


See also

* Khoisan word lists (Wiktionary) *
Languages of Botswana The official language of Botswana is English, while Tswana is considered to be a national language. English, which was inherited from colonial rule, is the language of official business and most written communication. Most of the population spea ...
*
Languages of Namibia Namibia, despite its scant population, is home to a wide diversity of languages, from multiple language families: Germanic, Bantu, and the various Khoisan families. When Namibia was administered by South Africa, Afrikaans, German, and English e ...


References


Bibliography

* * Ehret, Christopher. 1986. "Proposals on Khoisan Reconstruction." In ''African Hunter-Gatherers'' (International Symposium), edited by Franz Rottland & Rainer Vossen, 105–130. ''Sprache und Geschichte in Afrika'', special issue 7.1. Hamburg: Helmut Buske Verlag. *Ehret, Christopher. 2003. "Toward reconstructing Proto-South Khoisan." In ''Mother Tongue'' 8. *Greenberg, Joseph H. 1955. ''Studies in African Linguistic Classification.'' New Haven: Compass Publishing Company. (Reprints, with minor corrections, a series of eight articles published in the ''Southwestern Journal of Anthropology'' from 1949 to 1954.) *Greenberg, Joseph H. 1963. ''
The Languages of Africa ''The Languages of Africa'' is a 1963 book of essays by the linguist Joseph Greenberg, in which the author sets forth a genetic classification of African languages that, with some changes, continues to be the most commonly used one today. It is a ...
''. (Heavily revised version of Greenberg 1955.) Bloomington: Indiana University Press. (From the same publisher: second, revised edition, 1966; third edition, 1970. All three editions simultaneously published at The Hague by
Mouton Publishers Walter de Gruyter GmbH, known as De Gruyter (), is a German scholarly publishing house specializing in academic literature. History The roots of the company go back to 1749 when Frederick the Great granted the Königliche Realschule in Be ...
) *Güldemann, Tom and Rainer Vossen. 2000. "Khoisan." In ''African Languages: An Introduction'', edited by Bernd Heine and Derek Nurse, 99–122. Cambridge:
Cambridge University Press Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by King Henry VIII in 1534, it is the oldest university press in the world. It is also the King's Printer. Cambridge University Pre ...
. * *Honken, Henry. 1988. "Phonetic Correspondences among Khoisan Affricates." In ''New Perspectives on the Study of Khoisan'', edited by Rainer Vossen, 47–65. ''Quellen zur Khoisan-Forschung'' 7. Hamburg: Helmut Buske Verlag, 1988. *Honken, Henry. 1998. "Types of sound correspondence patterns in Khoisan languages." In ''Language, Identity and Conceptualization among the Khoisan'', edited by Mathias Schladt, 171–193. ''Quellen zur Khoisan-Forschung/Research in Khoisan studies'' 15. Köln: Rüdiger Köppe Verlag. *Köhler, O. 1971. "Die Khoe-sprachigen Buschmänner der Kalahari." In ''Forschungen zur allgemeinen und regionalen Geschichte (Festschrift Kurt Kayser)'', 373–411. Wiesbaden: F. Steiner. *Sands, Bonny. 1998
''Eastern and Southern African Khoisan: Evaluating Claims of Distant Linguistic Relationships.''
Cologne: Rüdiger Köppe Verlag. *Sands, Bonny. 1998. "Comparison and Classification of Khoisan languages." In ''Language History and Linguistic Description in Africa'', edited by
Ian Maddieson Ian Maddieson (born September 1, 1942 in Watford, United Kingdom) is British-American linguist and professor emeritus of linguistics at the University of New Mexico, in the United States. He has served as Vice-President of the International Phone ...
and Thomas J. Hinnebusch, 75–85. Trenton: Africa World Press. *Schladt, Mathias (editor). 1998
''Language, Identity, and Conceptualization among the Khoisan.''
Cologne: Rüdiger Köppe Verlag. * *Starostin, George. 2008
"From modern Khoisan languages to Proto-Khoisan: The Value of Intermediate Reconstructions."
(Originally published in ''Aspects of Comparative Linguistics'' 3 (2008), 337–470, Moscow: RSUH Publishers.) *Starostin, George. 2013. ''Languages of Africa: An attempt at a lexicostatistical classification.'' Volume I: Methodology. Khoesan Languages. Moscow. * Traill, Anthony. 1986. "Do the Khoi have a place in the San? New data on Khoisan linguistic relationships." In ''African Hunter-gatherers'' (International Symposium), Franz Rottland and Rainer Vossen, 407–430. ''Sprache und Geschichte in Afrika'', special issue 7.1. Hamburg: Helmut Buske Verlag. *Treis, Yvonne. 1998. "Names of Khoisan languages and Their Variants." In ''Language, Identity, and Conceptualization Among the Khoisan'', edited by Matthias Schladt. Köln: Rüdiger Köppe, 463–503. *Vossen, Rainer. 1997. ''Die Khoe-Sprachen. Ein Beitrag zur Erforschung der Sprachgeschichte Afrikas''. Köln: Rüdiger Köppe. *Vossen, Rainer. 2013. ''The Khoesan Languages''. Oxon: Routledge. * Westphal, E.O.J. 1971. "The Click Languages of Southern and Eastern Africa." In ''Current Trends in Linguistics'', Volume 7: ''Linguistics in Sub-Saharan Africa'', edited by T.A. Sebeok. Berlin: Mouton, 367–420. *Winter, J.C. 1981. "Die Khoisan-Familie." In ''Die Sprachen Afrikas'', edited by Bernd Heine, Thilo C. Schadeberg, and Ekkehard Wolff. Hamburg: Helmut Buske, 329–374. {{Authority control Proposed language families