APA (7th ed.) Citation

National Geographic Society (U.S.) & Thompson, J. M. Washington, D.C. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.) and John M. Thompson. Washington, D.C. Washington, D.C.: National Geographic Society.

MLA (8th ed.) Citation

National Geographic Society (U.S.) and John M. Thompson. Washington, D.C. National Geographic Society.

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