Cita APA (7a ed.)
Grosvenor, M. B. Great Adventures with National Geographic: Exploring Land, Sea, and Sky. National Geographic Society.
Cita estilo Chicago (17a ed.)
Grosvenor, Melville Bell. Great Adventures with National Geographic: Exploring Land, Sea, and Sky. Washington, EUA: National Geographic Society.
Cita MLA (9a ed.)
Grosvenor, Melville Bell. Great Adventures with National Geographic: Exploring Land, Sea, and Sky. National Geographic Society.
Precaución: Estas citas no son 100% exactas.