1) A Dissertation on the Phonetics of the Zulu Language (1923)

2) Report on the Unification of the Shona Dialects (1931).

3) A Comparative Study in Shona Phonetics (1931).

4) Bantu Linguistic Terminology (1935)
   Whole   |   Part 1   Part 2   Part 3   Part 4   Part 5

5) Bantu: Modern Grammatical, Phonetical, and Lexicographical Studies since 1860 (1945).

6) The Southern Bantu Languages (1954).

7) Zulu Syntax and Idiom (1955)
   Whole   |   Part 1   Part 2   Part 3   Part 4