Dyfyniad APA

National geographic. (2015). The incredible human machine. National Geographic.

Dyfyniad Arddull Chicago

National geographic. The Incredible Human Machine. Washington, D.C: National Geographic, 2015.

Dyfyniad MLA

National geographic. The Incredible Human Machine. National Geographic, 2015.

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