Coba jelasin Catatan dari Agama Olmek dong

(2005) "The Shark-Monster in Olmec Iconography ", in Mesoamerican Voices, 2005, v. 2.

(1990) The Mythology of Mexico and Central America, William Morrow, .

(1972) "Olmec Jaguars and Olmec Kings" in E.P. Benson (ed), The Cult of the Feline. Washington D.C.: Dumbarton Oaks, pp. 1-12.

(1989) "The Olmec heartland: evolution of ideology" in Robert J. Sharer and David C. Grove, (ed), Regional Perspectives on the Olmec. Cambridge University Press, , pp. 68-82.