APA (7th ed.) Citation

National Geographic Society, Washington, D.C. (1974). Research reports - National Geographic Society. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society, Washington, D.C. Research Reports - National Geographic Society. Washington: National Geographic Society, 1974.

MLA (9th ed.) Citation

National Geographic Society, Washington, D.C. Research Reports - National Geographic Society. National Geographic Society, 1974.

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