APA (7th ed.) Citation

Harper Collins & Winters, A. (1991). International economics (4th ed.). Harper Collins.

Chicago Style (17th ed.) Citation

Harper Collins and Alan Winters. International Economics. 4th ed. London: Harper Collins, 1991.

MLA (8th ed.) Citation

Harper Collins and Alan Winters. International Economics. 4th ed. Harper Collins, 1991.

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