References
- Abercrombie , D. 1965 . Studies in phonetics and linguistics , London : Oxford University Press .
- Brown , JT. 1875 . Secwana dictionary , Lobatsi : London Missionary Society .
- Catford , JC. 1988 . A practical introduction to phonetics , Oxford : Clarendon Press .
- Cole , DT. 1949 . Notes on the phonological relationships of Tswana vowels . African Studies , 8 : 109 – 131 .
- Cole , DT. 1955 . An introduction to Tswana grammar , Cape Town : Longman Penguin SA .
- Crisp , WBD. 1881 . Notes towards a Secoana grammar , London : Society for Promoting Christian Knowledge .
- Eulitz , C and Obleser , J. 2007 . Perception of acoustically complex phonological features in vowels is reflected in the induced brain-magnetic activity . Behavioral and Brain Functions , 3 : 26 – 30 .
- Frédoux , J. 1864 . A sketch of the Sechuana grammar , Cape Town : JC Juta, JL Philip .
- Johnson , K. 2003 . Acoustic and auditory phonetics , 2nd edn , Oxford : Blackwell Publishing .
- Jones , DJ. 1917 . An English pronunciation dictionary , London : Dent .
- Jones , DJ. 1928 . Sechuana reader in international phonetic orthography (with English translations) , London : University of London Press .
- Jones , D. 1922 . An outline of English phonetics , 2nd edn , Cambridge : W Heffer & Sons, Ltd .
- Ladefoged , P. 1975 . A course in phonetics , New York : Harcourt Brace Jovanovich, Inc .
- Ladefoged , P. 1996 . Elements of acoustic phonetics , 2nd edn , London : The University of Chicago Press Ltd .
- Ladefoged , P. 2006 . A course in phonetics , 5th edn , Boston : Thomson Wadsworth .
- Ladefoged , P and Maddieson , I. 1996 . The sounds of the world's languages , Malden : Blackwell Publishing .
- Ladefoged , P , Ladefoged , J and Everett , D. 1997 . Phonetic structures of Banawá, an endangered language . Phonetica , 54 : 94 – 111 .
- Le Roux M. 2004 . An acoustic phonetic study of the vowels of Setswana . MA dissertation , University of South Africa , South Africa .
- Le Roux , M and Le Roux , JC. 2008 . An acoustic assessment of Setswana vowels . South African Journal of African Languages , 28 : 156 – 171 .
- Lindblad P. 2001 . Critique of the IPA vowel quadrangle, especially the use of vowel points in it . Working Papers 49 104 – 107 . Lund University, Department of Linguistics .
- Mogapi , K. 1984 . Thutapuo ya Setswana poeletso ya bobedi , Gaborone : Longman Botswana (Pty) Limited .
- Roux JC. 1983 . Vokaalkwaliteit, toon en konsonantale invloede in Sotho . MA dissertation , University of Stellenbosch , South Africa .
- Snyman , JW. 1989 . An introduction to Tswana phonetics , Houtbaai : Marius Lubbe Publishers .
- Snyman , JW , Shole , JSS and Le Roux , JC. 1990 . Dikišinare ya Setswana/English/Afrikaans , Pretoria : Via Afrika .
- Stevens , K. 2000 . Acoustic phonetics , Cambridge : Massachusetts Institute of Technology Press .
- Tucker , AN. 1929 . The comparative phonetics of Suto-Chuana group of languages , London : Longmans, Green and Co .
- Vaissière , J. 2009 . Articulatory modeling and the definition of acoustic-perceptual targets for reference vowels . Chinese Journal of Phonetics , 2 : 22 – 23 .
- Vaissière J. 2011 . On the acoustic and perceptual characterization of reference vowels in a cross-language perspective . Plenary Lecture , Hong Kong August 17–21 2011
- Van Wyk , EB. 1979 . Praktiese fonetiek vir taalstudente: ‘n Inleiding , Durban : Butterworth .
- Wookey , AJ. 1905 . Secwana grammar , London : Purnell and Sons, Ltd .
- Ziervogel , D. 1967 . Handboek vir die spraakklanke en klankveranderinge in die Bantoetale van Suid-Afrika , Pretoria : University of South Africa .