Dyfyniad APA

National Geographic Society (U.S.). (2015). An uncommon history of common things, Volume 2. National Geographic.

Dyfyniad Arddull Chicago

National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. Washington, District of Columbia: National Geographic, 2015.

Dyfyniad MLA

National Geographic Society (U.S.). An Uncommon History of Common Things, Volume 2. National Geographic, 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.