APA (7th ed.) Citation

Warburg, G. (1939). Six years of Hitler: The Jews under the Nazi regime. Allen and Unwin.

Chicago Style (17th ed.) Citation

Warburg, Gustav. Six Years of Hitler: The Jews Under the Nazi Regime. London: Allen and Unwin, 1939.

MLA (8th ed.) Citation

Warburg, Gustav. Six Years of Hitler: The Jews Under the Nazi Regime. Allen and Unwin, 1939.