APA引文

Krugman, P. R., & Obstfeld, M. (2012). International economics: Theory & policy. [Boston]: Pearson; Addison-Wesley.

Trích dẫn kiểu Chicago

Krugman, Paul R., và Maurice Obstfeld. International Economics: Theory & Policy. [Boston]: Pearson; Addison-Wesley, 2012.

MLA引文

Krugman, Paul R., và Maurice Obstfeld. International Economics: Theory & Policy. [Boston]: Pearson; Addison-Wesley, 2012.

警告：這些引文格式不一定是100％准確.