APA (7th ed.) Citation

Bischoff, J. (2010). Enigma: Der Stille Kampf der Codebrecher. Geo-Epoche.

Chicago Style (17th ed.) Citation

Bischoff, Jürgen. "Enigma: Der Stille Kampf Der Codebrecher." Geo-Epoche 2010.

MLA (8th ed.) Citation

Bischoff, Jürgen. "Enigma: Der Stille Kampf Der Codebrecher." Geo-Epoche, 2010.

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