National Geographic Society (U.S.). (2015). An uncommon history of common things, Volume 2. National Geographic.
Chicago-viite (17. p.)National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. Washington, District of Columbia: National Geographic, 2015.
MLA-viite (9. p.)National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. National Geographic, 2015.
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