Style de citation APA (7e éd.)
Grosvenor, M. B. National Geographic: Vol. 135, no. 2, February 1969. National Geographic Society.
Style de citation Chicago (17e éd.)
Grosvenor, Melville Bell. National Geographic: Vol. 135, No. 2, February 1969. Washington, EUA: National Geographic Society.
Style de citation MLA (9e éd.)
Grosvenor, Melville Bell. National Geographic: Vol. 135, No. 2, February 1969. National Geographic Society.
Attention : ces citations peuvent ne pas être correctes à 100%.