Keegan, John M. 1989. The status of schwa and vowel co-occurrence restrictions in Mbay. In Bender, M. Lionel (ed.), Topics in Nilo-Saharan Linguistics, 233–248. Helmut Buske.
@incollection{1474_myb, author = {Keegan, John M.}, booktitle = {Topics in Nilo-Saharan Linguistics}, editor = {Bender, M. Lionel}, pages = {233–248}, publisher = {Helmut Buske}, title = {The status of schwa and vowel co-occurrence restrictions in Mbay}, volume = {3}, year = {1989} }