Taa language
Taa | |
---|---|
ǃXóõ | |
Taa ǂaan / Tâa ǂâã | |
Native to | Botswana, Namibia |
Region | Southern Ghanzi, northern Kgalagadi, western Southern and western Kweneng districts in Botswana; southern Omaheke and northeastern Hardap regions in Namibia. |
Native speakers | 2,500 (2011)[1] |
Tuu
| |
Language codes | |
ISO 639-3 | nmn |
Glottolog | taaa1242 [2] |
Taa /ˈtɑː/, also known as ǃXóõ (ǃKhong, ǃXoon – pronounced [ǃ͡χɔ̃ː˦],[3] English: /ˈkoʊ/[4]), is a Tuu language notable for its large number of phonemes, perhaps the largest in the world.[5] Most speakers live in Botswana, but a few hundred live in Namibia. The people call themselves ǃXoon (pl. ǃXooŋake) or ʼNǀohan (pl. Nǀumde), depending on the dialect they speak. The Tuu languages are one of the three traditional language families that make up the Khoisan languages.
Taa is the word for 'human being'; the local name of the language is Taa ǂaan (Tâa ǂâã), from ǂaan 'language'. ǃXoon (ǃXóõ) is an ethnonym used at opposite ends of the Taa-speaking area, but not by Taa speakers in between.[6] Most living Taa speakers are ethnic ǃXoon (plural ǃXooŋake) or 'Nǀohan (plural Nǀumde).[7]
Taa shares a number of characteristic features with West ǂʼAmkoe and Gǀui, which together are considered part of the Kalahari Basin sprachbund.[8]
Contents
Classification[edit]
Until the rediscovery of a few elderly speakers of Nǁng in the 1990s, Taa was thought to be the last surviving member of the Tuu language family.
Dialects[edit]
There is sufficient dialectal variation in Taa that it might be better described as a dialect continuum than as a single language. Taa dialects fall into two groups, suggesting a historical spread from west to east:[9]
- West Taa: Traill's West ǃXoon and Dorothea Bleek's Nǀuǁʼen
- East Taa
- ǃAma (Western)
- (Eastern)
- East ǃXoon (Lone Tree)
- Tsaasi–ǂHuan
- Tsaasi
- ǂHuan
Traill worked primarily with East ǃXoon, and the DoBeS project is working with ʼNǀohan (in East Taa) and West ǃXoon.
ǀʼAuni and Kiǀhazi, previously considered dialects of Taa, were more divergent than the dialects here, and are now classified as a distinct language, Lower Nossob.
Alternate names[edit]
The various dialects and social groups of the Taa, their many names, the unreliability of transcriptions found in the literature, and the fact that names may be shared between languages and that dialects have been classified, has resulted in a great deal of confusion. Traill (1974), for example, spent two chapters of his Compleat Guide to the Koon [sic] disentangling names and dialects.[10]
The name ǃXoon (more precisely ǃXóõ) is only used at Aminius Reserve in Namibia, around Lone Tree where Traill primarily worked, and at Dzutshwa (Botswana). It is, however, used by the ǃXoon for all Taa speakers. It has been variously spelled ǃxō, ǃkɔ̃ː, ǃko/ǃkõ, Khong, and the fully anglicized Koon.
Bleek's Nǀuǁʼen dialect[11] has been spelled ǀNuǁen, ǀNuǁe:n, Ngǀuǁen, Nguen, Nǀhuǁéi, ŋǀuǁẽin, ŋǀuǁẽi, ŋǀuǁen, ǀuǁen. It has also been called by the ambiguous Khoekhoe term Nǀusan (Nǀu-san, Nǀūsā, Nǀuusaa, Nǀhusi), sometimes rendered Nusan or Noosan, which has been used for other languages in the area. A subgroup was known as Koon [kɔ̃ː]. This dialect is apparently extinct.
Bleek recorded another now-extinct variety at the town of Khakhea, and it is known in the literature as Kakia. Names with a tee: Katia, Kattea, Khatia, and Xatia, are apparently spelling variants of Kakia, though this is not certain. Vaalpens, ǀKusi, and ǀEikusi evidently refer to the same variety as Xatia.
Westphal studied a variety rendered ǀŋamani, ǀnamani, Ngǀamani, ǀŋamasa. This dialect is apparently also now extinct.
Westphal also studied ǂHuan (ǂhũa) dialect (or ǂHũa-ʘwani), and used this name for the entire language. However, the term is ambiguous between Taa (Western ǂHũa) and ǂʼAmkoe (Eastern ǂHũa), and for this reason Traill chose to call the language ǃXóõ.
Tsaasi dialect is quite similar to ǂHuan, and like ǂHuan, the name is used ambiguously for a dialect of ǂʼAmkoe. This is a Tswana name, variously rendered Tshasi, Tshase, Tʃase, Tsase, Sasi, and Sase.
The Tswana term for Bushmen, Masarwa, is frequently encountered. More specific to the Taa are Magon (Magong) and the Tshasi mentioned above.
The Taa distinguish themselves along at least some of the groups above. Like many San peoples, they also distinguish themselves by the environment they live in (plain people, river people, etc.), and also by direction. Traill reports the following:[10]
- ǃama ʘʔâni "westerners"
- ǂhūã ʘʔâni "southerners"
- ʘqhōa ʘʔâni "in-betweeners"
- tùu ʔʘnāhnsā̂ "pure people"
Heinz reports that ǃxóõ is an exonym given by other Bushmen, and that the Taa call themselves ǃxoia.
The Taa refer to their language as tâa ǂâã "people's language". Westphal (1971) adopted the word tâa "person" as the name for the Southern Khoisan language family, which is now called Tuu.[10] The East ǃXoon term for the language is ǃxóɲa ǂâā [ǃ͡χɔ˦ ɲa˧ ǂaː˥˩˧].[12]
Phonology[edit]
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Taa has at least 58 consonants, 31 vowels, and four tones (Traill 1985, 1994 on East ǃXoon), or at least 87 consonants, 20 vowels, and two tones (DoBeS 2008 on West ǃXoon), by many counts the most of any known language. These include 20 (Traill) or 43 (DoBeS) click consonants and several vowel phonations, though opinions vary as to which of the 130 (Traill) or 164 (DoBeS) consonant sounds are single segments and which are consonant clusters.
Tones[edit]
Traill describes four tones for the East ǃXoon dialect: high [á], mid [ā], low [à], and mid-falling [â]. Patterns for bisyllabic bases include high-high, mid-mid, mid-mid-falling, and low-low. DoBeS describes only two tonemes, high and low, for the West ǃXoon dialect. By analyzing each base as bimoraic, Traill's four tones are mapped onto [áá], [àá], [àà], and [áà]. Unlike Traill, Naumann does not find a four-way contrast on monomoraic grammatical forms in Eastern !Xoõ data.[13]
In addition to lexical tone, Traill describes East !Xoon nouns as falling into two tone classes according to the melody induced on concordial morphemes and transitive verbs: either level (Tone Class I) or falling (Tone Class II).[12] Transitive object nouns from Tone Class I trigger mid/mid-rising tone in transitive verbs, while Tone Class 2 objects correlate with any tone contour. Naumann finds the same results in the eastern 'N|ohan dialect.[13]
Vowels[edit]
Taa has five vowel qualities, [a e i o u]. The Traill and DoBeS descriptions differ in the phonations of these vowels; it is not clear if this reflects a dialectal difference or a difference of analysis.
East ǃXoon (Traill)[edit]
Traill describes the phonations of the East ǃXoon dialect as plain ⟨a⟩, murmured ⟨ah⟩, or glottalized ⟨aʼ⟩. [a o u] may also be both glottalized and murmured ⟨aʼh⟩, as well as pharyngealized ⟨a̰⟩/⟨aq⟩ or strident ⟨a̰h⟩/⟨aqh⟩. [a u] may be both pharyngealized and glottalized ⟨a̰ʼ⟩, for 26 vowels not counting nasalization or length.
Murmured vowels after plain consonants contrast with plain vowels after aspirated consonants, and likewise glottalized vowels with ejective consonants, so these are phonations of the vowels and not assimilation with consonant phonation.
Vowels may be long or short, but long vowels may be sequences rather than distinct phonemes. The other vowel quality sequences—better known as diphthongs—disregarding the added complexity of phonation, are [ai, ae, ao, au, oi, oe, oa, ou, ui, ue, ua].
All plain vowels may be nasalized. No other phonation may be nasalized, but nasalization occurs in combination with other phonations as the second vowel of a sequence ("long vowel" or "diphthong"). These sequences alternate dialectally with vowel plus velar nasal. That is, the name ǃXóõ may be dialectally [kǃxóŋ], and this in turn may be phonemically /kǃxóɲ/, since [ɲ] does not occur word-finally. However, this cannot explain the short nasal vowels, so Taa has at least 31 vowels.
A long, glottalized, murmured, nasalized o with falling tone is written ⟨ôʼhõ⟩. A long, strident nasalized o with low tone is written ⟨òqhõ⟩, since Traill analyzes stridency as phonemically pharyngealized murmur. (Note that phonetically these are distinct phonations.)
West ǃXoon (DoBeS)[edit]
DoBeS describes the phonations of the West ǃXoon dialect as plain, a e i o u; nasalized, an en in on un; epiglottalized or pharyngealized, aq eq iq oq uq; strident, aqh eqh iqh oqh uqh; and glottalized or 'tense', aʼ eʼ iʼ oʼ uʼ.
Consonants[edit]
Taa is unusual in allowing mixed voicing in its consonants. These have been called "prevoiced", but they actually appear to be consonant clusters. When homorganic, as in [dt], such clusters are listed in the chart below.
Taa consonants are complex, and it is not clear how much of the difference between the dialects is real and how much is an artifact of analysis.
East ǃXoon (Traill)[edit]
Marginal or rare consonants are in parentheses. Asterisks mark consonants added in 1994, which are likely also marginal or rare. A parenthetical alternative is the analysis of Miller (2011).[14]
Labial | Dental | Alveolar | Palatal | Velar | Uvular | Glottal | ||
---|---|---|---|---|---|---|---|---|
Plosive | voiced | d | dz | ɡ (?) | ɢ ~ ɴɢ (?) | |||
tenuis | p* | t | ts | k | q | ʔ | ||
voiceless aspirated | pʰ* | tʰ | tsʰ | kʰ (?) | qʰ (?) | |||
voiced aspirated (breathy voiced?) |
dtʰ (dʱ) |
dtsʰ (dzʱ) |
ɡkʰ* (?) | ɢqʰ ~ ɴɢqʰ (?) | ||||
voiceless ejective | tʼ* | tsʼ | kʼ*, kxʼ (?) | (qʼ) (?) | ||||
voiced ejective | dtsʼ (?) | ɡkxʼ (?) | ||||||
Fricative | voiceless | f* | s | x | h* | |||
Nasal | voiced | m | n | ɲ | (ŋ) | |||
glottalized | ˀm | ˀn | ||||||
Other | (β) | (l) | (dʲ ~ j) |
The nasal [ɲ] only occurs between vowels, and [ŋ] only word finally (and then only in some dialects), so these may be allophones. [β], [l], [j] also only occur in medial position.
The mixed-voice consonants have long been puzzling. Miller-Ockhuizen (2003)[16] analyzes them as breathy voiced, attributing the medial voicelessness to a larger glottal opening gesture than is found in Hindustani breathy-voiced consonants. The same four-way contrast in phonation is found in the pulmonic contour clicks. Taa is typologically unusual regardless in having mixed-voice ejectives. However, Juǀʼhoansi, which is part of the same Sprachbund as Taa, truly does have mixed voicing in [d͡tʰ, d͡tʃʰ, d͡tsʼ].[17]
Of the velar and uvular series, Miller (2011) only reports /k, x, q/; the others in the table are marked (?).[track this down] There are additional consonant clusters, though these can also be analyzed as uvularized consonants: /pʼkxʼ (pᵡʼ), tx (tᵡ), dtx (dᵡ), tsʰx (tsᵡ), dtsʰx (dzᵡ), tʼkxʼ (tᵡʼ), dtʼkxʼ (dᵡʼ), tsʼkxʼ (tsᵡʼ), dtsʼkxʼ (dzᵡʼ)/.
Taa may have as few as 83 click sounds, if the more complex clicks are analyzed as clusters. Given the intricate clusters posited seen in the non-click consonants, it is not surprising that many of the Taa clicks should be analyzed as clusters. However, there is some debate whether these are actually clusters; all non-Khoisan languages in the world that have clusters allow clusters with sonorants like r, l, w, j (as in English tree, sleep, quick, cue), and this does not occur in Taa.
There are five click types: bilabial, dental, lateral, alveolar, and palatal. There are seventeen series, differing in phonation, manner, and complexity (what were traditionally considered uvular clicks, but that are now analyzed either as clusters or as airstream contours). These are perfectly normal consonants in Taa, and indeed are preferred over non-clicks in word-initial position.
noisy clicks | 'sharp' clicks | manner, along with speaker or dialect variation | DoBeS CC analysis |
Miller (2011) analysis | |||
bilabial clicks |
dental clicks |
lateral clicks |
alveolar clicks |
palatal clicks | |||
kʘ | kǀ | kǁ | kǃ | kǂ | Tenuis (k) | kǂ | ǂ |
kʘʰ* | kǀʰ | kǁʰ | kǃʰ | kǂʰ | Aspirated (kʰ) | kǂ + qʰ | ǂʰ * |
ɡʘ | ɡǀ | ɡǁ | ɡǃ | ɡǂ | Voiced (ɡ) | ɡǂ | ᶢǂ |
ɡʘh | ɡǀh | ɡǁh | ɡǃh | ɡǂh | Voiced velar plosive followed by aspiration (ɡh, ɡkʰ) | ɡǂ + qʰ | ᶢǂʱ |
ŋʘ | ŋǀ | ŋǁ | ŋǃ | ŋǂ | Voiced nasal (ŋ) | ŋǂ | ᵑǂ |
ŋ̊ʘ | ŋ̊ǀ | ŋ̊ǁ | ŋ̊ǃ | ŋ̊ǂ | Voiceless nasal (ŋ̊) | ŋ̊ǂ | ᵑ̊ǂ |
↓ŋ̊ʘʰ | ↓ŋ̊ǀʰ | ↓ŋ̊ǁʰ | ↓ŋ̊ǃʰ | ↓ŋ̊ǂʰ | Ingressive voiceless nasal with delayed aspiration (↓ŋ̊ʰ) | kǂ + h | ᵑ̊ǂʰ |
kʘˀ | kǀˀ | kǁˀ | kǃˀ | kǂˀ | Glottalized plosive (kˀ) | kǂ + ʔ | ᵑǂˀ * |
(kʘʼ?)* | ? | ? | ǂˀ * | ||||
ˀŋʘ | ˀŋǀ | ˀŋǁ | ˀŋǃ | ˀŋǂ | Preglottalized nasal (ˀŋ) | kǂ + mˀ/nˀ | ˀᵑǂ |
qʘ | qǀ | qǁ | qǃ | qǂ | Tenuis uvular (q) | kǂ + q | ǂ͡q |
(qʘʰ?)* | Aspirated uvular (qʰ) | ? | ǂ͡qʰ * | ||||
ɢʘ | ɢǀ | ɢǁ | ɢǃ | ɢǂ | (Prenasalized) voiced uvular (ɢ, ɴɢ) | kǂ + ɢ | ᶢǂ͡ɢ |
ɢǀh | ɢǃh | ɢǂh | Voiced (prenasalized) uvular plosive followed by aspiration, velar frication, or uvular trill (ᴺɢh, ᴺɢx, ᴺɢʀ) |
ɡǂ + ɢqʰ | ᶢǂ͡ɢʱ | ||
kʘˣ | kǀˣ | kǁˣ | kǃˣ | kǂˣ | Voiceless affricate (kˣ) | kǂ + x | ǂ͡qχ |
ɡʘx | ɡǀx | ɡǁx | ɡǃx | ɡǂx | Voiced velar plosive followed by voiceless velar fricative (ɡx, ɡkx) | ɡǂ + x | ᶢǂ͡ɢʁ |
qʘʼ | qǀʼ | qǁʼ | qǃʼ | qǂʼ | Uvular ejective (qʼ) | kǂ + qʼ | ǂ͡qʼ |
kʘʼqʼ | kǀʼqʼ | kǁʼqʼ | kǃʼqʼ | kǂʼqʼ | Velar ejective followed by uvular ejective (kʼqʼ, dialectically kxʼ) | kǂ + kxʼ | ǂ͡kxʼ |
ɡʘqʼ | ɡǀqʼ | ɡǁqʼ | ɡǃqʼ | ɡǂqʼ | Voiced velar plosive followed by uvular ejective (ɡqʼ, dialectically ɡkxʼ) | ɡǂ + kxʼ | ᶢǂ͡kxʼ |
The DoBeS project takes Traill's cluster analysis to mean that only the twenty tenuis, voiced, nasal, and voiceless nasal clicks are basic, with the rest being clusters of the tenuis and voiced clicks with x, kxʼ, q, ɢ, qʰ, ɢqʰ, qʼ, ʔ, h and either mˀ or nˀ. Recent work on Taa's sister language Nǁng suggests that all clicks in both languages have a uvular or rear articulation, and that the clicks considered to be uvular here are actually lingual–pulmonic and lingual–glottalic airstream contours. It may be that the 'prevoiced' consonants of Taa, including prevoiced clicks, can also be analysed as contour consonants, in this case with voicing contours.
*There is a misalignment in the source tables: DoBeS has 17 series, Miller (2011) 19, with the additional distinctions apparently being ǂʰ vs. ǂ͡qʰ and ᵑǂˀ vs. ǂˀ.
All nasal clicks have twin airstreams, since the air passing through the nose bypasses the tongue. Usually this is pulmonic egressive. However, the ↓ŋ̊ʰ series in Taa is characterized by pulmonic ingressive nasal airflow. Ladefoged & Maddieson (1996:268) state that "This ǃXóõ click is probably unique among the sounds of the world's languages that, even in the middle of a sentence, it may have ingressive pulmonic airflow." Taa is the only language known to contrast voiceless nasal and voiceless nasal aspirated clicks (Miller 2011).
West ǃXoon (DoBeS)[edit]
West ǃXoon has 164 consonants in a strict unit analysis, including 111 clicks in 23 series, which under a cluster analysis reduce to 87 consonants, including 43 clicks.
These are written in the practical orthography (Naumann 2008).[18] Marginal consonants are not marked as such.
Labial | Alveolar | Palatal | Velar | Uvular | Glottal | ||||
---|---|---|---|---|---|---|---|---|---|
Plosive | voiced | b | d | d͡z | ɡ | ᶰɢ | |||
tenuis | p | t | t͡s | k | q | ʔ | |||
aspirated | pʰ | tʰ | tsʰ | kʰ | qʰ | ||||
voiced aspirated | bʱ | dʱ | d͡zʱ | ɡʱ | ᶰɢʱ | ||||
ejective | pʼ | tʼ | t͡sʼ | kʼ | qʼ | q͡χʼ | |||
voiced 'ejective' | d͡zʔ | ɡʔ | ɢʔ | ɢʁʔ | |||||
Fricative | voiceless | f | s | χ | ɦ | ||||
Nasal | voiced | m | n | ɲ | ŋ | ||||
voiceless | |||||||||
glottalized | ˀm | ˀn | |||||||
Approximant | w | l | j | ||||||
"Intermittent" | ɾ |
Vowel nasalization is only phonemic on the second mora (in CCVV etc. syllables), as it is a phonetic effect of clicks such as ⟨nǂhh⟩ on the first mora. ⟨nǂhh⟩ does not make the following vowel breathy, maintaining a contrast between ⟨nǂhha⟩ and ⟨nǂhhah⟩. Likewise, while ⟨gǂʼ⟩ does make the following vowel creaky, there is a delayed onset to the vowel and the amplitude of the glottalization is less than that of ⟨gǂaʼ⟩ with a phonemically creaky vowel.
In an attempt to keep the phonemic inventory as symmetric as possible, the DoBeS team analyzed as segments two of the click types that Traill analyzed as clusters. These are (using the palatal clicks as examples) the pre-glottalized nasal clicks, ʼnǂ, which Traill had analyzed as /ǂ/ + /ʼn/, and the voiced aspirated clicks, gǂh, which Traill had analyzed as /ɡǂ/ + /qʰ/.
The expectation, from the morphology of ǃXoon, for voiceless-voiced pairs of click clusters led to the discovery of several series not distinguished by Traill. (This morphology appears to be more pervasive in West ǃXoon than in the East ǃXoon dialect that Traill worked on.) Thus for Trail's ǂqh, the DoBeS team distinguishes two phonemes, ǂqh and ǂh, and for Traill's ǂʼ, they have ǂ" and ǂʼ. It also led to the discovery of voiced click types which may not exist in East ǃXoon at all, namely nǂ", nǂhh, gǂʼ, and gǂqʼ.
Under the contour analysis of Miller (2009), the distinction between simple and contour clicks largely parallels the DoBeS identification of clusters, apart from the last four rows (ǂ", nǂ", ǂhh, nǂhh), which are considered to be simple clicks.
Phonotactics[edit]
The Taa syllable structure, as described by DoBeS, may be one of the following:
- CVV
- CCVV
- CVC2V
- CCVC2V
- CVN
- CCVN
where C is a consonant, V is a vowel, and N is a nasal stop. There is a very limited number of consonants which can occur in the second (C2) position and only certain vowel sequences (VV and V…V) occur. The possible consonant clusters (CC) is covered above; C2 may be [b~β̞], [dʲ~j], [l], [m], [n], [ɲ].
Grammar[edit]
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Taa is a subject–verb–object language with serial verbs and inflecting prepositions. Genitives, adjectives, relative clauses, and numbers come after the nouns they apply to. Reduplication is used to form causatives. There are five nominal agreement classes and an additional two tone groups. Agreement occurs on pronouns, transitive verbs (with the object), adjectives, prepositions, and some particles.
Phrases[edit]
The phrases from Eastern ǃXóõ were compiled by Anthony Traill:
ǃnˤù.ṵ ì à ǁʼà-be ǃù.m ʘàa sâa Hare.14 1PRO PST take:S-3 Eland.3 child:34 thither "As for Hare, she took Eland's child away."
ǃqháa̰ kū ǂnûm ǁɢˤûlitê ǀè dtxóʔlu ǀnàe ǂʼá sˤàa̰ give MPO:4PRO two genital:22-P ASS:3 stench:3 DAT:3PRO COM:2 fat:22 "Give them their stinking genitals with the fat!"
References[edit]
This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (April 2008) (Learn how and when to remove this template message) |
- ^ Taa at Ethnologue (19th ed., 2016)
- ^ Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Taa". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
- ^ The proper pronunciation of “ǃXóõ” can be heard in this recording, repeated from 0′16″ to 0′24″.
- ^ Alan Barnard (…) Hunters and Herders of Southern Africa, p.xxii.
- ^ Click languages
- ^ Gertrud Boden, 2007, ǃQamtee ǀaa ǂXanya: 'the Book of Traditions' : Histories, Texts and Illustrations from the ǃXoon and 'Nǀohan People of Namibia
- ^ DoBeS, “Taa”.
- ^ Güldemann, Tom; Fehn, Anne-Maria (2015). "The Kalahari Basin area as a "Sprachbund" before the Bantu expansion - an update". Online.
- ^ Naumann (2011) "A preliminary classification of Taa dialects".
- ^ a b c Yvonne Treis, 1998, "Names of Khoisan Languages and their Variants"
- ^ Distinguish ǁNg ǃʼe, a form of Nǁng, and ǁŨǁʼe, which is related to Seroa.
- ^ a b c Traill, Anthony (1994). A ǃXóõ Dictionary. (Quellen zur Khoisan-Forschung, vol. 9). Köln: Rüdiger Köppe. p. 23. ISBN 3-927620-56-4.
- ^ a b Naumann, Christfried. "High and low tone in Taa (!Xóõ)". hdl.handle.net. Retrieved 2017-11-03.[dead link]
- ^ Miller, Amanda (2011). "The Representation of Clicks". In van Oostendorp, M.; Ewen, C.; Hume, E.; Rice, K. The Blackwell Companion to Phonology. 1.1. Blackwell Publishing. p. 434. ISBN 9781405184236.
- ^ Traill, Anthony (1985). Phonetic and Phonological Studies of ǃXóõ Bushman. Hamburg: Helmut Buske. ISBN 3-87118-669-4.
- ^ Miller-Ockhuizen, Amanda (2003). The Phonetics and Phonology of Gutturals: A Case Study from Ju|'hoansi. New York: Routledge. ISBN 9781135884819.
- ^ Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. pp. 63, 80–81. ISBN 0-631-19814-8.
- ^ Naumann, Christfied (2008), "The Consonantal System of West ǃXoon", 3rd International Symposium on Khoisan Languages and Linguistics, Riezlern