APA引文

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引文

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 7th ed. Addison-Wesley, 2006.

警告：這些引文格式不一定是100％准確.