Laycock, Don. n.d. Notebook C3: Selected Research Papers of Don Laycock on Languages in Papua New Guinea: Umbrak-Aiku, Agi, Aruop. Don Laycock (compiler); Don Laycock (researcher). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). oai:paradisec.org.au:DL2-003.
@misc{105, author = {Laycock, Don}, title = {Notebook C3: Selected Research Papers of Don Laycock on Languages in Papua New Guinea: Umbrak-Aiku, Agi, Aruop. Don Laycock (compiler); Don Laycock (researcher). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). oai:paradisec.org.au:DL2-003.}, year = {n.d.} }