APA (7e ed.) Bronvermelding

Engel, F. A., & Gordon, R. K. (1976). An ancient world preserved: Relics and records of prehistory in the Andes (Revised and updated.). Crown Publishers.

Chicago (17e ed.) Bronvermelding

Engel, Frédéric André, en Rachel Kendall Gordon. An Ancient World Preserved: Relics and Records of Prehistory in the Andes. Revised and updated. New York: Crown Publishers, 1976.

MLA (9e ed.) Bronvermelding

Engel, Frédéric André, en Rachel Kendall Gordon. An Ancient World Preserved: Relics and Records of Prehistory in the Andes. Revised and updated. Crown Publishers, 1976.