Laycock, Donald C. 1973. Sepik Languages: Checklist and Preliminary Classification. (Pacific Linguistics: Series B, 25.) Canberra: Research School of Pacific and Asian Studies, Australian National University. iv+129+10pp.
@book{hvLaycockSepik, address = {Canberra}, author = {Laycock, Donald C.}, pages = {iv+129+10}, publisher = {Canberra: Research School of Pacific and Asian Studies, Australian National University}, series = {Pacific Linguistics: Series B}, title = {Sepik Languages: Checklist and Preliminary Classification}, volume = {25}, year = {1973} }