APA (7th ed.) Citation

Doerries, R. R., & Weinberg, G. L. (2009). Hitler's intelligence chief: Walter Schellenberg. Enigma Books.

Chicago Style (17th ed.) Citation

Doerries, Reinhard R., and Gerhard L. Weinberg. Hitler's Intelligence Chief: Walter Schellenberg. New York: Enigma Books, 2009.

MLA (9th ed.) Citation

Doerries, Reinhard R., and Gerhard L. Weinberg. Hitler's Intelligence Chief: Walter Schellenberg. Enigma Books, 2009.