Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Ethnologue: Languages of the World, 16th Edition (2009) . (2009) · edited by M. Paul Lewis · SIL International http://www.ethnologue.com/

World Oral Literature Project . http://www.oralliterature.org

LL-MAP (Language and Location: A Map Accessibility Project) . Anthony Aristar and Helen Aristar-Dry and Yichun Xie (2012) · http://llmap.org

Mungkip: An Endangered Language . Retsema, Thom; Margaret Potter; and Rachel Gray (2009) · SIL Electronic Survey Report · Vol. 2009-015 ·