APA (7e ed.) Bronvermelding

Krugman, P. R., & Obstfeld, M. (2000). International economics: Theory and policy (5th ed.). Pearson Addison-Wesley.

Chicago (17e ed.) Bronvermelding

Krugman, Paul R., en Maurice Obstfeld. International Economics: Theory and Policy. 5th ed. Boston: Pearson Addison-Wesley, 2000.

MLA (8e ed.) Bronvermelding

Krugman, Paul R., en Maurice Obstfeld. International Economics: Theory and Policy. 5th ed. Pearson Addison-Wesley, 2000.