1975–1976 “Some problems of Bantu Lexicostatistics”. Lexicostatistics in Genetic Linguistics 11, Proceeding of the Montreal Conference, Centres de Recherches Mathématiques Université de Montréal, May 19–20, 1973, ed. by I. Dyen & G. Jucquois, 147–173. Cahiers de l’Institut de Linguistique de Louvain 31:5–6.
Cole, D. T.
1952 “Introductory notes on the Tswana language”. M.A. Dissertation. Johannesburg: University of the Witwatersrand.
Doke, C. M. & Cole D. T.
1969Contributions to the Study of African Languages. Johannesburg: Witwatersrand University Press.
Guthrie, M.
1971Comparative Bantu: An introduction to the comparative linguistics and prehistory of the Bantu languages. Volume 21. London: Gregg International Publishers.
Poulos G. & C. T. Msimang
1998A Linguistic Analysis of Zulu. Cape Town: Via Afrika.
Schadeberg, T.
1995 “Spirantization and the 7-to-5 vowel Merger in Bantu”. Sound Change ed. by M. Dominicy & D. Demolin, 73–84. Amsterdam & Philadelphia: John Benjamins.
Traugott, E. C. & Heine B.
eds.1991Approaches to Grammaticalisation. Volume 11. Amsterdam & Philadelphia: John Benjamins.
Vansina, Jan
1995 “New linguisticevidence and ‘the Bantu expansion’”. Journal of African History 361.173–195.