National Geographic Society & National Geographic Society. (1959). The National Geographic: The journal of the National Geographic Society. National Geographic Society.
Citazione stile Chigago Style (17a edizione)National Geographic Society e National Geographic Society. The National Geographic: The Journal of the National Geographic Society. Washington, D.C.: National Geographic Society, 1959.
Citatione MLA (9a ed.)National Geographic Society e National Geographic Society. The National Geographic: The Journal of the National Geographic Society. National Geographic Society, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.