Tucker, Archie N., Margaret A. Bryan & James Woodburn. 1977. The East African Click Languages: A Phonetic Comparison. In G. Moehlig and Franz Rottland and Bernd Heine (eds.), Zur Sprachgeschichte und Ethnohistorie in Afrika, 300–323. Berlin: Dietrich Diener Verlag.
@incollection{tucker1977east, address = {Berlin}, author = {Tucker, Archie N. and Margaret A. Bryan and James Woodburn}, booktitle = {Zur Sprachgeschichte und Ethnohistorie in Afrika}, editor = {G. Moehlig and Franz Rottland and Bernd Heine}, pages = {300–323}, publisher = {Dietrich Diener Verlag}, title = {The East African Click Languages: A Phonetic Comparison.}, year = {1977} }