APA-referens (7:e uppl.)
Navarrete, C. (1974). The Olmec rock carvings at Pijijiapan, Chiapas, Mexico and other olmec pieces from Chiapas and Guatemala. New World Archaeological Foundation.
Chicago-referens (17:e uppl.)
Navarrete, Carlos. The Olmec Rock Carvings at Pijijiapan, Chiapas, Mexico and Other Olmec Pieces from Chiapas and Guatemala. Provo, Utah: New World Archaeological Foundation, 1974.
MLA-referens (9:e uppl.)
Navarrete, Carlos. The Olmec Rock Carvings at Pijijiapan, Chiapas, Mexico and Other Olmec Pieces from Chiapas and Guatemala. New World Archaeological Foundation, 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.