Cita APA

National Geographic Society (U.S.) Special Publications Division, Bahmanbegui, M., Cole, D. P., De Munck, A., Dyson-Hudson, N., Englebert, V., . . . Allen, W. L. (1971). Nomads of the world. National Geographic Society.

Citación estilo Chicago

National Geographic Society (U.S.) Special Publications Division, et al. Nomads of the World. Washington, D.C: National Geographic Society, 1971.

Cita MLA

National Geographic Society (U.S.) Special Publications Division, et al. Nomads of the World. National Geographic Society, 1971.