Dyfyniad APA

Roll, E. (1973). A history of economic thought (4th ed., rev. and enlarged.). Faber.

Dyfyniad Arddull Chicago

Roll, Eric. A History of Economic Thought. 4th ed., rev. and enlarged. London: Faber, 1973.

Dyfyniad MLA

Roll, Eric. A History of Economic Thought. 4th ed., rev. and enlarged. Faber, 1973.

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