Haruna, Andrew. 1998. "Language Death: The Case of Bubburè in Southern Bauchi Area, Northern Nigeria." In Endangered Languages in Africa, edited by M. Brenzinger. 227-251. Köln: Rüdiger Köppe.

Hanke, Wanda. 1952. "O Idioma Mura." 1: Manaus.

Golla, Victor. 2007. "North America." In Encyclopedia of the World's Endangered Languages, edited by C. Moseley. 1-96. London & New York: Routledge.

Goddard, Ives. 1997. "Pidgin Delaware." In Contact languages: a wider perspective, edited by Sarah Grey Thomason. 17: 43-98. Amsterdam: John Benjamins.

Beatriz Garza Cuarón and Yolanda Lastra. 1991. "Endangered Languages in Mexico." In Endangered Languages, edited by R. H. Robins and E. M. Uhlenbeck. 93-134. New York: Berg.

Franceschini, D. C. La Langue Sateré-Mawé: Description Et Analyse Morphosyntaxique. PhD thesis, Université Paris VII, 1999.

Nicholas Evans. 2009. "Dying Words: Endangered Languages and What They Have To Tell Us." John Wiley & Sons.

1959. "Kusunda and Chepang: Notes On Two Little-known Tribes of Nepal." In Bulletin of the International Committee on Urgent Anthropological Ethnological Research, 2: 77-84.

Leitner, G. W. von. 1889. "The Hunza and Nagyr Handbook." Calcutta: Superintendent of Government Printing.

Berg, Helma van den. 1995. "A Grammar of Hunzib (with Texts and Lexicon)." 01: München: Lincom.