APA (7th ed.) Citation

Whitehead, G. (1992). Economics made simple (14th ed.). Made Simple Books.

Chicago Style (17th ed.) Citation

Whitehead, Geoffrey. Economics Made Simple. 14th ed. Oxford: Made Simple Books, 1992.

MLA (9th ed.) Citation

Whitehead, Geoffrey. Economics Made Simple. 14th ed. Made Simple Books, 1992.