APA引文

Pugel, T. A. (2009). International economics. New York: McGraw-Hill/Irwin.

Trích dẫn kiểu Chicago

Pugel, Thomas A. International Economics. New York: McGraw-Hill/Irwin, 2009.

MLA引文

Pugel, Thomas A. International Economics. New York: McGraw-Hill/Irwin, 2009.

警告：這些引文格式不一定是100％准確.