Laycock, Donald C. 1965. The Ndu language family (Sepik District, New Guinea). Canberra: Linguistic Circle of Canberra Publications.
@misc{10071, author = {Laycock, Donald C.}, title = {The Ndu language family (Sepik District, New Guinea). Canberra: Linguistic Circle of Canberra Publications.}, year = {1965} }