National Geographic Society (U.S.) & Goldberg, S. (2021). The 21st century: Photographs from the image collection. National Geographic.
Style de citation Chicago (17e éd.)National Geographic Society (U.S.) et Susan Goldberg. The 21st Century: Photographs from the Image Collection. Washington, D.C.: National Geographic, 2021.
Style de citation MLA (8e éd.)National Geographic Society (U.S.) et Susan Goldberg. The 21st Century: Photographs from the Image Collection. National Geographic, 2021.
Attention : ces citations peuvent ne pas être correctes à 100%.