Ravicz, Robert, and A. Kimball Romney. "The Amuzgo." In Ethnology, edited by Robert Wauchope, 417. Vols. 7-8 of Handbook of Middle American Indians. Austin: University of Texas Press, 1969. https://ebookcentral-proquest-com.proxy.library.upenn.edu/lib/upenn-ebooks/reader.action?docID=4826335&ppg=432.

Ravicz, Robert, and A. Kimball Romney. "The Amuzgo." In Ethnology, edited by Robert Wauchope, 417. Vols. 7-8 of Handbook of Middle American Indians. Austin: University of Texas Press, 1969. https://ebookcentral-proquest-com.proxy.library.upenn.edu/lib/upenn-ebooks/reader.action?docID=4826335&ppg=432.