APA (7th ed.) Citation

Barber, W. J. (1970). A history of economic thought. Penguin Books.

Chicago Style (17th ed.) Citation

Barber, William J. A History of Economic Thought. Harmondsworth: Penguin Books, 1970.

MLA (8th ed.) Citation

Barber, William J. A History of Economic Thought. Penguin Books, 1970.

Warning: These citations may not always be 100% accurate.