Vossen, Rainer and Heine, Bernd. 1989. The historical reconstructions of proto-Ongamo-Maa phonology and vocabulary. In Bender, M. Lionel (ed.), Topics in Nilo-Saharan Linguistics, 181–217. Helmut Buske.
@incollection{1473_nsg,
author = {Vossen, Rainer and Heine, Bernd},
booktitle = {Topics in Nilo-Saharan Linguistics},
editor = {Bender, M. Lionel},
pages = {181–217},
publisher = {Helmut Buske},
title = {The historical reconstructions of proto-Ongamo-Maa phonology and vocabulary},
volume = {3},
year = {1989}
}