APA Citation

National Geographic Society. (1990). National Geographic atlas of the world (Sixxth Editon.). United States of America: National Geographic Society.

Chicago Style Citation

National Geographic Society. National Geographic Atlas of the World. Sixxth Editon. United States of America: National Geographic Society, 1990.

MLA Citation

National Geographic Society. National Geographic Atlas of the World. Sixxth Editon. United States of America: National Geographic Society, 1990.

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