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}
}