APA引文

National Geographic Society. Special Publications Division. (1986). Builders of the ancient world: Marvels of engineering. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society. Special Publications Division. Builders of the Ancient World: Marvels of Engineering. Washington, D.C: The Society, 1986.

MLA引文

National Geographic Society. Special Publications Division. Builders of the Ancient World: Marvels of Engineering. The Society, 1986.