APA (7th ed.) Citation

Krugman, P. R., & Obstfeld, M. (1991). International economics: Theory and policy (Second edition.). HarperCollins.

Chicago Style (17th ed.) Citation

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. Second edition. New York, NY: HarperCollins, 1991.

MLA (8th ed.) Citation

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. Second edition. HarperCollins, 1991.

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