APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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