REFERENCES

• Adendorff , Ralph and Savini-Beck , Marina . 1993 . The teaching of consonants and vowels in the new South Africa . SAALT Journal for Language Teaching , 27 : 232 – 248 .
   Google Scholar
• Canonici , Noverino N. 1995 . The Nguni Languages: A Simple Presentation and Comparison of Xhosa and Swati with Zulu , Durban : University of Natal .
   Google Scholar
• Cohen , A. 1952 . The Phonemes of English , The Hague : Uleman .
   Google Scholar
• De Klerk , Vivian . 1996 . Focus on South Africa , Amsterdam : John Benjamins .
   Google Scholar
• Deuchar , Margaret and Clark , Angeles . 1996 . Early bilingual acquisition of the voicing contrast in English and Spanish . Journal of Phonetics , 24 : 351 – 365 .
   Web of Science ®Google Scholar
• Dreyer , Carisma , Wissing , Daan and Wissing , Marié . 1996 . The relationship between cognitive styles and pronunciation accuracy in English as a second language . South African Journal of Linguistics , : 37 – 62 . Suppl. 34
   Google Scholar
• Gough , David . 1996 . Black English in South Africa Edited by: De Klerk , Vivian . 53 – 77 .
   Google Scholar
• Grijzenhout , Janet and Van Rooy , Bertus . 2001 . “ Second language acquisition through gradual constraint demotion ” . In Theorie des Lexicons, Arbeiten des Sonderforschungsbereich 282 , volume 119 , Düsseldorf : Heinrich-Heine-Universität .
   Google Scholar
• Gustafson , Kjell . 1986 . Aspiration and voicing assimilation . Progress Report from Oxford Phonetics , 1 : 46 – 54 .
   Google Scholar
• Hundleby , C. E. 1964 . Xhosa-English Pronunciation in the South-East Cape , Unpublished Ph.D.-thesis Rhodes University .
   Google Scholar
• Jacobs , Monica . 1994 . Consonantal variation in Zulu-English mesolect . South African Journal of Linguistics , 12 : 16 – 25 .
   Google Scholar
• Jessen , Michael . “ The features [tense], [checked], and [voice] in auditry phonological representation ” . In Studies on Distinctive features , Edited by: Hall , T. A. Berlin : Mouton . in press
   Google Scholar
• Khumalo , J. S. M. 1984 . A preliminary study of Zulu adoptives . African Studies , 43 : 205 – 216 .
   Web of Science ®Google Scholar
• Ladefoged and Maddison . 1996 . The Sounds of the World's Languages , Oxford : Black-well .
   Google Scholar
• Lisker , Leigh and Abramson , Arthur S. 1964 . A cross-language study of voicing in initial stops: acoustic measurements . Word , 20 : 384 – 422 .
   Web of Science ®Google Scholar
• Ramsaran , Susan . 1990 . Studies in the Pronunciation of English , London : Routledge .
   Google Scholar
• Schmied , Josef . 1996 . English in Zimbabwe, Zambia and Malawi Edited by: De Klerk , Vivian . 301 – 321 .
   Google Scholar
• Simo Bobda , Augustin . 2000 . Comparing some phonological features across African accents of English . English Studies , 3 : 249 – 266 .
   Google Scholar
• Titlestad , Peter . 1996 . English, the constitution and South Africa's language future Edited by: De Klerk , Vivian . 163 – 173 .
   Google Scholar
• Ufomata , Titilayo . 1990 . Acceptable models for TEFL (with special reference to Nigeria) Edited by: Ramsaran , Susan . 212 – 216 .
   Google Scholar
• Van Rooy , A. J. 1995 . Fonologiese & Fonetiese Aspekte van Slotkonsonantontstemming in die Engels van Afrikaans- & Tswanasprekendes , Potchefstroom : PU vir CHO . (Dissertation, MA.)
   Google Scholar
• Van Rooy , A. J. 1999 . The Relationship between Phonetics and Phonology: An investigation into the representation of the phonological feature [voice] , Potchefstroom : PU vir CHO . (Thesis, Ph.D.)
   Google Scholar
• Van Rooy , Bertus and Van Huyssteen , Gerhard B. The vowels of BSAE: current knowledge and future prospects
   Google Scholar
• Van Rooy , A. J. and Wissing , Daan . 1996 . Degrees of neutralization during syllable-final devoicing: evidence from second language phonetics . South African Journal of Linguistics , : 77 – 98 . Suppl 33
   Google Scholar
• Van Rooy , Bertus and Wissing , Daan . 1998 . On the relationship between voicing, aspiration and tenseness . South African Journal of Linguistics , : 101 – 124 . Suppl. 36
   Google Scholar
• Van Rooy , Bertus and Wissing , Daan . “ Distinctive voice implies regressive voicing assimilation ” . In Studies on Distinctive features , Edited by: Hall , T. A. Berlin : Mouton . in press
   Google Scholar
• Wissing , Daan and Pretorius , Rigardt . 1996 . Voiceless plosives of Tswana: ac acoustic-perceptual investigation . South African Journal of Linguistics , : 83 – 102 . Suppl. 34
   Google Scholar
• Wissing , Daan and Roux , Justus . The interrelationship between VOT and voice assimilation . Proceedings of the 13th International Congress of the Phonetic Sciences . Edited by: Elenius , Kjell and Branderud , Peter . Volume 1 , pp. 50 – 53 . Stockholm
   Google Scholar
• Wissing , Robin J. 1987 . Language Contact and Interference in the Acquisition of English Proficiency by Bantu-speaking Students , Pretoria : University of South Africa . (Dissertation, M.A.)
   Google Scholar
• Yavas , Mehmet . 1994 . “ Final stop devoicing in interlanguage ” . In First and Second Language Phonology , Edited by: Yavas , Mehmet . 267 – 282 . San Diego : Singular .
   Google Scholar
• Ziervogel , D. , Louw , J. A. , Ferreira , J. A. , Baumbach , E. J. M. and Lombard , D. P. 1967 . Handboek vir die Spraakklanke & Klankveranderinge in die Bantoetale van Suid-Afrika , Pretoria : Unisa .
   Google Scholar