APA (7th ed.) Citation

Churchhouse, R. F. (2002). Codes and ciphers: Julius Caesar, the Enigma, and the internet (1. publ.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Churchhouse, R. F. Codes and Ciphers: Julius Caesar, the Enigma, and the Internet. 1. publ. Cambridge [u.a.]: Cambridge University Press, 2002.

MLA (9th ed.) Citation

Churchhouse, R. F. Codes and Ciphers: Julius Caesar, the Enigma, and the Internet. 1. publ. Cambridge University Press, 2002.