Andersen, Torben. 2003. Berta Language. In Uhlig, Siegbert (ed.), Encyclopaedia Aethiopica, 546-547. Wiesbaden: Otto Harrassowitz.
@incollection{wAndersenBerta, address = {Wiesbaden}, author = {Andersen, Torben}, booktitle = {Encyclopaedia Aethiopica}, editor = {Uhlig, Siegbert}, pages = {546-547}, publisher = {Wiesbaden: Otto Harrassowitz}, title = {Berta Language}, volume = {I}, year = {2003} }