Karttunen, Frances(1983)An Analytical Dictionary of Nahuatl, Austin: University of Texas Press, page 21
Wolgemuth, Carl et al.(2002)Diccionario náhuatl de los municipios de Mecayapan y Tatahuicapan de Juárez, Veracruz, 2nd electronic ed., SIL, pages 20, 256, 260