APA (7th ed.) Citation

National Geographic Society (U.S.) Special Publications Division. (1979). Mysteries of the ancient world. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.) Special Publications Division. Mysteries of the Ancient World. Washington: The Society, 1979.

MLA (9th ed.) Citation

National Geographic Society (U.S.) Special Publications Division. Mysteries of the Ancient World. The Society, 1979.