APA引文

Krugman,Paul R., & Obstfeld, M. (2009). International economics: Theory and policy (8th ed.). Pearson Addison-Wesley.

芝加哥风格引文

Krugman,Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 8th ed. Boston: Pearson Addison-Wesley, 2009.

MLA引文

Krugman,Paul R., 与 Maurice Obstfeld. International Economics: Theory and Policy. 8th ed. Pearson Addison-Wesley, 2009.

警告：这些引文格式不一定是100％准确.