1. The phonetics of the Hottentot language;Beach,1938
2. Specimens of Bushmen folklore;Bleek,1911
3. Articulatory and Acoustic Properties of Apical and Laminal Articulations;Dart;UCLA Working Papers in Phonetics,1991
4. The phonetics of ʗũ Bushman;Doke;Bantu Studies,1925
5. An outline of ≠ Khomani Bushman phonetics;Doke,1937