2003, Andrews, J. Richard, Workbook for Introduction to Classical Nahuatl, rev. ed., Norman: University of Oklahoma Press, page p. 229,
1983, Karttunen, Frances, An Analytical Dictionary of Nahuatl, Austin: University of Texas Press, page p. 103,
2001, Lockhart, James, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts, Stanford: Stanford University Press, page p. 220,
2002, Wolgemuth, Carl et al., Diccionario náhuatl de los municipios de Mecayapan y Tatahuicapan de Juárez, Veracruz[1], 2nd electronic ed., Instituto Lingüístico de Verano, page pp. 56, 214,