Yezhoù toukanoek
Ur familh-yezhoù eo ar yezhoù toukanek enni 25 yezh komzet gant pobloù-orin e Kolombia dreist holl.

Levroniezh 

 Campbell, Lyle. (1997). American Indian languages: The historical linguistics of Native America. New York: Oxford University Press. ISBN 0-19-509427-1.
 Kaufman, Terrence. (1990). Language history in South America: What we know and how to know more. In D. L. Payne (Ed.), Amazonian linguistics: Studies in lowland South American languages (pp. 13-67). Austin: University of Texas Press. ISBN 0-292-70414-3.
 Kaufman, Terrence. (1994). The native languages of South America. In C. Mosley & R. E. Asher (Eds.), Atlas of the world's languages (pp. 46-76). London: Routledge.

Yezhoù toukanoek