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