Sommer, Bruce A. 1976. Umbuygamu: The Classification of a Cape York Peninsular Language. (Papers in Australian Linguistics, 10.) Canberra: Australian National University.
@book{Sommer-1976, address = {Canberra}, author = {Sommer, Bruce A.}, publisher = {Australian National University}, series = {Papers in Australian Linguistics}, title = {Umbuygamu: The Classification of a Cape York Peninsular Language}, volume = {10}, year = {1976} }