APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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