APA (7th ed.) Citation

Krugman, P. R., Melitz, M. J., & Obstfeld, M. (2015). International economics: Theory and policy (Tenth edition.). Pearson.

Chicago Style (17th ed.) Citation

Krugman, Paul R., Marc J. Melitz, and Maurice Obstfeld. International Economics: Theory and Policy. Tenth edition. Boston: Pearson, 2015.

MLA (9th ed.) Citation

Krugman, Paul R., et al. International Economics: Theory and Policy. Tenth edition. Pearson, 2015.