Cita APA (7a ed.)
Grosvenor, M. B. National geographic: November 1972. National Geographic Society.
Cita estilo Chicago (17a ed.)
Grosvenor, Melville Bell. National Geographic: November 1972. Washington, EUA: National Geographic Society.
Cita MLA (9a ed.)
Grosvenor, Melville Bell. National Geographic: November 1972. National Geographic Society.
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