APA (7th ed.) Citation

Welchman, G. (1982). The Hut Six story: Breaking the Enigma codes. McGraw-Hill.

Chicago Style (17th ed.) Citation

Welchman, Gordon. The Hut Six Story: Breaking the Enigma Codes. New York: McGraw-Hill, 1982.

MLA (9th ed.) Citation

Welchman, Gordon. The Hut Six Story: Breaking the Enigma Codes. McGraw-Hill, 1982.

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