APA (7th ed.) Citation

Williamson & Miller. (1991). The world economy: A textbook in international economics (2nd. ed.). Harvester Wheatsheaf.

Chicago Style (17th ed.) Citation

Williamson and Miller. The World Economy: A Textbook in International Economics. 2nd. ed. New York: Harvester Wheatsheaf, 1991.

MLA (8th ed.) Citation

Williamson and Miller. The World Economy: A Textbook in International Economics. 2nd. ed. Harvester Wheatsheaf, 1991.