APA (7th ed.) Citation

Gallenkamp, C. (1962). Maya, the riddle and discovery of a lost civilization. Pyramid Publication.

Chicago Style (17th ed.) Citation

Gallenkamp, Charles. Maya, the Riddle and Discovery of a Lost Civilization. New York, N.Y.: Pyramid Publication, 1962.

MLA (9th ed.) Citation

Gallenkamp, Charles. Maya, the Riddle and Discovery of a Lost Civilization. Pyramid Publication, 1962.