APA引文

Krugman, P. R. (1999). The return of depression economics. New York: W.W. Norton.

Trích dẫn kiểu Chicago

Krugman, Paul R. The Return of Depression Economics. New York: W.W. Norton, 1999.

MLA引文

Krugman, Paul R. The Return of Depression Economics. New York: W.W. Norton, 1999.

警告：這些引文格式不一定是100％准確.