Style de citation APA (7e éd.)
National Geographic Society (U.S.). (1991). National Geographic picture atlas of our world. The National Geographic Society.
Style de citation Chicago (17e éd.)
National Geographic Society (U.S.). National Geographic Picture Atlas of Our World. Washington D.C: The National Geographic Society, 1991.
Style de citation MLA (9e éd.)
National Geographic Society (U.S.). National Geographic Picture Atlas of Our World. The National Geographic Society, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.