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/

The Dialects of Baraïn (East Chadic). ( pp. 28 ) . Joseph Lovestrand (2011) · SIL Electronic Working Papers 2011. 011 http://www.sil.org/silewp/abstract.asp?ref=2011-011