National Geographic Society (U.S.). Book Division. (1992). The Builders: Marvels of engineering. The Society.
Style de citation Chicago (17e éd.)National Geographic Society (U.S.). Book Division. The Builders: Marvels of Engineering. Washington, DC: The Society, 1992.
Style de citation MLA (9e éd.)National Geographic Society (U.S.). Book Division. The Builders: Marvels of Engineering. The Society, 1992.
Attention : ces citations peuvent ne pas être correctes à 100%.