APA-referens (7:e uppl.)

National Gallery of Art (U.S.), Benson, E. P., Fuente, B. d. l., & Marcia Castro-Leal. (1996). Olmec art of ancient Mexico. National Gallery of Art.

Chicago-referens (17:e uppl.)

National Gallery of Art (U.S.), Elizabeth P. Benson, Beatriz de la Fuente, och Marcia Castro-Leal. Olmec Art of Ancient Mexico. Washington, D.C: National Gallery of Art, 1996.

MLA-referens (9:e uppl.)

National Gallery of Art (U.S.), et al. Olmec Art of Ancient Mexico. National Gallery of Art, 1996.