National Geographic Society. Special Publications Division. (1986). Builders of the ancient world: Marvels of engineering. The Society.
Style de citation Chicago (17e éd.)National Geographic Society. Special Publications Division. Builders of the Ancient World: Marvels of Engineering. Washington, D.C: The Society, 1986.
Style de citation MLA (9e éd.)National Geographic Society. Special Publications Division. Builders of the Ancient World: Marvels of Engineering. The Society, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.