Cyphers, Ann (1999). «From Stone to Symbols: Olmec Art in Social Context at San Lorenzo Tenochtitlán». En Grove, David C., ed. Social Patterns in Pre-Classic Mesoamerica (Dumbarton Oaks Research Library and Collection): 155-181. ISBN0-88402-252-8. Consultado el 16 de junio de 2024. «"The physical arrangement and characteristics of human figures and felines bear uncanny symbolic resemblances to later period myths from the Maya and Central Mexican cultures about twins and jaguars." Cyphers (1999), p. 174».