APA citiranje

Barber, W. J. (1967). A history of economic thought. New York: Penguin Books.

Trích dẫn kiểu Chicago

Barber, William J. A History of Economic Thought. New York: Penguin Books, 1967.

MLA citiranje

Barber, William J. A History of Economic Thought. New York: Penguin Books, 1967.