APA (7th ed.) Citation

Koehler, H. (1940). Inside the Gestapo: Hitler's shadow over the world. Pallas Publ.

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

Koehler, Hansjürgen. Inside the Gestapo: Hitler's Shadow over the World. Pallas Publ, 1940.

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