Cita APA (7a ed.)
National Geographic Society (U.S.). (1999). National Geographic adventure. National Geographic Society.
Cita Chicago Style (17a ed.)
National Geographic Society (U.S.). National Geographic Adventure. New York, NY: National Geographic Society, 1999.
Cita MLA (9a ed.)
National Geographic Society (U.S.). National Geographic Adventure. National Geographic Society, 1999.
Precaución: Estas citas no son 100% exactas.