APA引文

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引文

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