APA (7th ed.) Citation
Krugman, P. R., & Obstfeld, M. (2006). International economics: Theory and policy (7th ed.). Addison-Wesley.
Chicago Style (17th ed.) Citation
Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Boston, MA: Addison-Wesley, 2006.
MLA (9th ed.) Citation
Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Addison-Wesley, 2006.
Warning: These citations may not always be 100% accurate.