کتاب های Wilfrid H. G. Haacke
A Nama grammar: the noun-phrase
Haacke, Wilfrid, 1976
Khoekhoegowab-English / English-Khoekhoegowab Glossary / Mîdi Saogub
Wilfrid H.G. Haacke and Eliphas Eiseb, 1999
