APA (7th ed.) Citation

Ratcliff. (2006). Delusions of intelligence: Enigma, Ultra and the end of secure ciphers. Cambridge University Press.

Chicago Style (17th ed.) Citation

Ratcliff. Delusions of Intelligence: Enigma, Ultra and the End of Secure Ciphers. Cambridge: Cambridge University Press, 2006.

MLA (8th ed.) Citation

Ratcliff. Delusions of Intelligence: Enigma, Ultra and the End of Secure Ciphers. Cambridge University Press, 2006.

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