APA (7th ed.) Citation

National Geographic Society & Chagnon, N. A. (1973). Primitive worlds: People lost in time. The National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society and Napoleon A. Chagnon. Primitive Worlds: People Lost in Time. Washington: The National Geographic Society, 1973.

MLA (9th ed.) Citation

National Geographic Society and Napoleon A. Chagnon. Primitive Worlds: People Lost in Time. The National Geographic Society, 1973.