APA (7th ed.) Citation

Hodges, A. (1989). Alan Turing, enigma. Kammerer & Unverzagt.

Chicago Style (17th ed.) Citation

Hodges, Andrew. Alan Turing, Enigma. Berlin: Kammerer & Unverzagt, 1989.

MLA (9th ed.) Citation

Hodges, Andrew. Alan Turing, Enigma. Kammerer & Unverzagt, 1989.

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