Jenkins, M. C. (2013). National geographic 125 years: Legendary photographs, adventures and discoveries that changed the world. National Geographic Society.
Citace podle Chicago (17th ed.)Jenkins, Mark Collins. National Geographic 125 Years: Legendary Photographs, Adventures and Discoveries That Changed the World. Washingto, D.C: National Geographic Society, 2013.
Citace podle MLA (9th ed.)Jenkins, Mark Collins. National Geographic 125 Years: Legendary Photographs, Adventures and Discoveries That Changed the World. National Geographic Society, 2013.
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