Notebook D8: Selected Research Papers of Don Laycock on Languages in Papua New Guinea: Ali, Kalou, Pasi, Olo. Don Laycock (compiler). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). oai:paradisec.org.au:DL2-019.; Notebook D2: Selected Research Papers of Don Laycock on Languages in Papua New Guinea: Tomleo, Ali-yakamul (Kap), Olo, Valman, Mori=Fas, Sumo, One, Fas, Aruek. Don Laycock (compiler). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). oai:paradisec.org.au:DL2-013.