National Geographic Society (U.S.). (2015). An uncommon history of common things, Volume 2. National Geographic.
芝加哥风格引文National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. Washington, District of Columbia: National Geographic, 2015.
MLA引文National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. National Geographic, 2015.
警告：这些引文格式不一定是100％准确.