Dyfyniad APA

Greenspan, A. (2007). Age of turbulence: Adventures in a new world (NA.). Penguin Books.

Dyfyniad Arddull Chicago

Greenspan, Alan. Age of Turbulence: Adventures in a New World. NA. New York: Penguin Books, 2007.

Dyfyniad MLA

Greenspan, Alan. Age of Turbulence: Adventures in a New World. NA. Penguin Books, 2007.

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