APA (7th ed.) Citation

Koehler, H. (1940). Inside The Gestapo: Hitler's Shadow Over the World. Pallas.

Chicago Style (17th ed.) Citation

Koehler, Hansjürgen. Inside The Gestapo: Hitler's Shadow Over the World. London: Pallas, 1940.

MLA (8th ed.) Citation

Koehler, Hansjürgen. Inside The Gestapo: Hitler's Shadow Over the World. Pallas, 1940.

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