1. Adams, R. 2005. Prehistoric Mesoamerica. Norman: University of Oklahoma Press.
2. Amadio, A., A. K. Balkansky, H. A. Lapham, and J. Hill. 2010. Ritual Use of Animals at Formative Period Tayata: A Comparative Perspective, ProQuest Dissertations and Theses.
3. Anderson, J. 1969. The Human Skeleton: A Manual for Archaeologists. Rev. ed. Ottawa: National Museums of Canada.
4. Aoyama, K., T. Inomata, D. Triadan, F. Pinzón, J. Palomo, J. Maclellan, and A. Sharpe. 2017. Early Maya Ritual Practices and Craft Production: Late Middle Preclassic Ritual Deposits Containing Obsidian Artifacts at Ceibal, Guatemala. Journal of Field Archaeology 42 (5): 408–422.
5. Arnold, P. 2000. Sociopolitical Complexity and the Gulf Olmecs: A View from the Tuxtla Mountains, Veracruz, Mexico. Studies in the History of Art 58: 116–135.