Dyfyniad APA

Barber, W. J. (1967). History of economic thought. Penguin.

Dyfyniad Arddull Chicago

Barber, William J. History of Economic Thought. USA: Penguin, 1967.

Dyfyniad MLA

Barber, William J. History of Economic Thought. Penguin, 1967.

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