Sicoli 2005, p. 797. Sicoli, Mark A. (2005). "Oto-Manguean languages". In Philipp Strazny (ed.). Encyclopedia of Linguistics. New York: Fitzroy Dearborn. pp. 797–800.
Sicoli 2005, p. 798. Sicoli, Mark A. (2005). "Oto-Manguean languages". In Philipp Strazny (ed.). Encyclopedia of Linguistics. New York: Fitzroy Dearborn. pp. 797–800.
cdi.gob.mx
2000 census; the numbers are based on the number of total population for each group and the percentages of speakers given on the website of the Comisión Nacional para el Desarrollo de los Pueblos Indígenas, http://www.cdi.gob.mx/index.php?id_seccion=660, accessed 28 July 2008).
