APA (7th ed.) Citation

Higenbottam, F. (1973). Codes and ciphers / (by) Frank Higenbottam. English Universities Press.

Chicago Style (17th ed.) Citation

Higenbottam, Frank. Codes and Ciphers / (by) Frank Higenbottam. London: English Universities Press, 1973.

MLA (9th ed.) Citation

Higenbottam, Frank. Codes and Ciphers / (by) Frank Higenbottam. English Universities Press, 1973.

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