APA (7th ed.) Citation

Kahn, D. (1991). Seizing the enigma: The race to break the German U-boat codes, 1939-1943. Houghton Mifflin Co..

Chicago Style (17th ed.) Citation

Kahn, David. Seizing the Enigma: The Race to Break the German U-boat Codes, 1939-1943. Boston: Houghton Mifflin Co., 1991.

MLA (9th ed.) Citation

Kahn, David. Seizing the Enigma: The Race to Break the German U-boat Codes, 1939-1943. Houghton Mifflin Co., 1991.