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APA-referensJenkins, M. C. (2013). National Geographic 125 years: Legendary photographs, adventures, and discoveries that changed the world. National Geographic Society.
Chicago-stil citatJenkins, Mark Collins. National Geographic 125 Years: Legendary Photographs, Adventures, and Discoveries That Changed the World. Washington, D.C.: National Geographic Society, 2013.
MLA-referensJenkins, Mark Collins. National Geographic 125 Years: Legendary Photographs, Adventures, and Discoveries That Changed the World. National Geographic Society, 2013.
Harvard-stil citatJenkins, M. C. 2013. National Geographic 125 years: Legendary photographs, adventures, and discoveries that changed the world. Washington, D.C.: National Geographic Society.
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