1. Carod-Artal, Francisco Javier. 2011. “Hallucinogenic Drugs in Pre-Columbian Mesoamerica Cultures”. Neurologia 30(1): 42–49. https://doi.org/10.1016/j.nrl.2011.07.003
2. Coe, Sophie and Michael D. Coe. 2007. The True History of Chocolate. Second ed. New York: Thames & Hudson.
3. David A. Freidel and Linda Schele. 1989. “Dead Kings and Living Mountains: Dedication and Termination Rituals of the Lowland Maya”. In Word and Image in Mayan Culture Explorations in Language, Writing, and Representation, edited by Don Rice, 233–342. Salt Lake City: University of Utah Press.
4. De Lima, Oswaldo G., Jose F. De Mello, Ivan L. D’Albuquerque, Franco Delle Monache, Giovanni B. Marini-Bettolo and Mario Sousa. 1977. “Contribution to the Knowledge of the Maya Ritual Wine: Balche”. Lloydia 40: 195–200.
5. Dreiss, Meredith L. and Sharon Edgar Greenhill. 2008. Chocolate, Pathway to the Gods, The Sacred Realm of Chocolate in Mesoamerica. Tuscon: University of Arizona Press.