APA (7th ed.) Citation

National Geographic Society (U.S.). (2012). The complete National geographic. National Geographic.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). The Complete National Geographic. [Washington, D.C.]: National Geographic, 2012.

MLA (9th ed.) Citation

National Geographic Society (U.S.). The Complete National Geographic. National Geographic, 2012.

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