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) ·

East and Southeast Asia ( pp. 349-424 ) . David Bradley (2007) · In Encyclopedia of the World's Endangered Languages edited by C. Moseley · London & New York: Routledge

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

Phonology and sketch grammar of Kri, a Vietic language of Laos ( pp. 3-69 ) . N. J. Enfield & Gerard Diffloth (2009) · Cahiers de Linguislique - Asie Orientale. 38 (1) · http://pubman.mpdl.mpg.de/pubman/item/escidoc:107912/component/escidoc:204877/Enfield_2009_Phonology+and+sketch+grammar+of+Kri.pdf