信息不完整 “Sepik languages: checklist and preliminary classification” . Laycock, Donald C. (1973) , Wurm, Stephen A. · Australian National University, Research School of Pacific Studies, Department of Linguistics

信息不完整 “Ethnologue: Languages of the World, 18th Edition” . Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig · SIL International

信息不完整 “World Oral Literature Project” .

信息不完整 “LL-MAP (Language and Location: A Map Accessibility Project)” . Anthony Aristar and Helen Aristar-Dry and Yichun Xie (2012)