Citace podle APA (7th ed.)
Grosvenor, M. B. National Geographic: Vol. 139, no. 6, June 1971. National Geographic Society.
Citace podle Chicago (17th ed.)
Grosvenor, Melville Bell. National Geographic: Vol. 139, No. 6, June 1971. Washington, EUA: National Geographic Society.
Citace podle MLA (9th ed.)
Grosvenor, Melville Bell. National Geographic: Vol. 139, No. 6, June 1971. National Geographic Society.
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