APA-viite (7. p.)

Krugman, P. R., & Obstfeld, M. (2003). International economics: Theory and policy (6th ed.). Addison-Wesley.

Chicago-viite (17. p.)

Krugman, Paul R., ja Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Boston: Addison-Wesley, 2003.

MLA-viite (9. p.)

Krugman, Paul R., ja Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Addison-Wesley, 2003.