APA-referens (7:e uppl.)

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2015). International economics: Theory and policy (10th edition.). Pearson.

Chicago-referens (17:e uppl.)

Krugman, Paul R., Maurice Obstfeld, och Marc J. Melitz. International Economics: Theory and Policy. 10th edition. Boston: Pearson, 2015.

MLA-referens (8:e uppl.)

Krugman, Paul R., et al. International Economics: Theory and Policy. 10th edition. Pearson, 2015.