Dyfyniad APA

Gray, A. (1961). The development of economic doctrine. John Wiley & Sons.

Dyfyniad Arddull Chicago

Gray, Alexander. The Development of Economic Doctrine. New York: John Wiley & Sons, 1961.

Dyfyniad MLA

Gray, Alexander. The Development of Economic Doctrine. John Wiley & Sons, 1961.

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