APA引文

Krugman, P. R. (2000). The return of depression economics. London: Penguin.

Trích dẫn kiểu Chicago

Krugman, Paul R. The Return of Depression Economics. London: Penguin, 2000.

MLA引文

Krugman, Paul R. The Return of Depression Economics. London: Penguin, 2000.

警告:这些引文格式不一定是100%准确.