Dyfyniad APA

Low, J. E., Hockenberry, J., & Upin, C. (2012). Climate of doubt. PBS : Distributed by PBS Distribution.

Dyfyniad Arddull Chicago

Low, John E., John Hockenberry, and Catherine Upin. Climate of Doubt. [Arlington, Va.]: PBS : Distributed by PBS Distribution, 2012.

Dyfyniad MLA

Low, John E., et al. Climate of Doubt. PBS : Distributed by PBS Distribution, 2012.

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