APA (7. basım) Alıntı
Grosvenor, M. B. National Geographic: Vol. 147, no. 2, February 1975. National Geographic Society.
Chicago Style (17. basım) Atıf
Grosvenor, Melville Bell. National Geographic: Vol. 147, No. 2, February 1975. Washington, EUA: National Geographic Society.
MLA (9th ed.) Atıf
Grosvenor, Melville Bell. National Geographic: Vol. 147, No. 2, February 1975. National Geographic Society.
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