APA (7th ed.) Citation

National Geographic Society (U.S.). Book Division. (1998). The wonders of the world. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). Book Division. The Wonders of the World. Washington, D.C: National Geographic Society, 1998.

MLA (9th ed.) Citation

National Geographic Society (U.S.). Book Division. The Wonders of the World. National Geographic Society, 1998.

Warning: These citations may not always be 100% accurate.