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) ·

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

How many languages were spoken in Australia? . Claire Bowern (2011) · http://anggarrgoon.files.wordpress.com/2011/12/austlangs-masterlanguagelist-dec2011.xlsx

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

Gugadj and Gog-Nar: A contrastive sketch ( pp. 151-164 ) . Gavan J. Breen (1976) · In Languages of Cape York Australian Aboriginal Studies: Research and Regional Studies · Vol. 6 · edited by Peter Sutton · Canberra: Australian Institute of Aboriginal Studies