APA (7th ed.) Citation
Churchhouse, R. F. (2002). Codes and Ciphers: Julius Caesar, the enigma and the internet. Cambridge University Press.
Chicago Style (17th ed.) Citation
Churchhouse, Robert F. Codes and Ciphers: Julius Caesar, the Enigma and the Internet. Cambridge: Cambridge University Press, 2002.
MLA (9th ed.) Citation
Churchhouse, Robert F. Codes and Ciphers: Julius Caesar, the Enigma and the Internet. Cambridge University Press, 2002.
Warning: These citations may not always be 100% accurate.