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/

Atlas of the World’s Languages in Danger . Christopher Moseley (ed.) (2010) · UNESCO Publishing http://www.unesco.org/culture/en/endangeredlanguages/atlas

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

Australia and the Pacific ( pp. 424-557 ) . Stephen A Wurm (2007) · In Encyclopedia of the World's Endangered Languages Routledge

A Study of the Oroha Language, Mala, Solomon Islands ( pp. 587-610 ) . W. G. Ivens (1927) · Bulletin of the School of Oriental and African Studies. 4 (3) ·