APA (7th ed.) Citation

Fest, J. C., Winston, R., & Winston, C. (2002). Hitler. Penguin.

Chicago Style (17th ed.) Citation

Fest, Joachim C., Richard Winston, and Clara Winston. Hitler. London: Penguin, 2002.

MLA (9th ed.) Citation

Fest, Joachim C., et al. Hitler. Penguin, 2002.

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