Andersen, Torben. 1993. Aspects of Berta phonology. Afrika und Übersee 76. 41–80. Dietrich Reimer Verlag GmbH.
@article{andersen1993aspects,
author = {Andersen, Torben},
journal = {Afrika und Übersee},
pages = {41–80},
publisher = {Dietrich Reimer Verlag GmbH},
title = {Aspects of Berta phonology},
volume = {76},
year = {1993}
}