APA (7th ed.) Citation

National Geographic Society. (1981). National Geographic Society: Research Reports v.13. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society. National Geographic Society: Research Reports V.13. Washington: National Geographic Society, 1981.

MLA (9th ed.) Citation

National Geographic Society. National Geographic Society: Research Reports V.13. National Geographic Society, 1981.

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