IRIN, [Iniciativa para la Recuperación del Idioma Náhuat] (2004). "IRIN-International homepage". The Nawat Language Recovery Initiative. IRIN. Archived from the original on 20 May 2010. Retrieved 31 March 2008.
IRIN, [Iniciativa para la Recuperación del Idioma Náhuat] (2004). "IRIN-International homepage". The Nawat Language Recovery Initiative. IRIN. Archived from the original on 20 May 2010. Retrieved 31 March 2008.
wiktionary.org
en.wiktionary.org
See also the English Wiktionary, which lists the origins of each of these words.