APA (7th ed.) Citation

Krugman, P. (1999). The return of depression. Penguin.

Chicago Style (17th ed.) Citation

Krugman, Paul. The Return of Depression. London: Penguin, 1999.

MLA (9th ed.) Citation

Krugman, Paul. The Return of Depression. Penguin, 1999.

Warning: These citations may not always be 100% accurate.