APA引文

Krugman, P. R., & Paul R. Krugman; Maurice Obstfeld; Marc J. Melitz. (2015). International economics: Theory & policy. Boston: Pearson Addison-Wesley.

Trích dẫn kiểu Chicago

Krugman, Paul R., và Paul R. Krugman; Maurice Obstfeld; Marc J. Melitz. International Economics: Theory & Policy. Boston: Pearson Addison-Wesley, 2015.

MLA引文

Krugman, Paul R., và Paul R. Krugman; Maurice Obstfeld; Marc J. Melitz. International Economics: Theory & Policy. Boston: Pearson Addison-Wesley, 2015.

警告：這些引文格式不一定是100％准確.