Dyfyniad APA

Clark, C. (1957). The conditions of economic progress (3rd ed.). New York: St. Martins Pr..

Dyfyniad Arddull Chicago

Clark, Colin. The Conditions of Economic Progress. 3rd ed. London: Macmillan: New York: St. Martins Pr., 1957.

Dyfyniad MLA

Clark, Colin. The Conditions of Economic Progress. 3rd ed. New York: St. Martins Pr., 1957.

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