APA (7th ed.) Citation

National Geographic Society (U.S.), National Geographic Society (U.S.). Book Division, & Grove, N. (1999). National Geographic atlas of the world (7th ed.). National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.), National Geographic Society (U.S.). Book Division, and Noel Grove. National Geographic Atlas of the World. 7th ed. Washington, D.C.: National Geographic Society, 1999.

MLA (9th ed.) Citation

National Geographic Society (U.S.), et al. National Geographic Atlas of the World. 7th ed. National Geographic Society, 1999.