APA (7th ed.) Citation

Wrixon, F. B. (1992). Codes and ciphers. Prentice Hall.

Chicago Style (17th ed.) Citation

Wrixon, Fred B. Codes and Ciphers. New York: Prentice Hall, 1992.

MLA (9th ed.) Citation

Wrixon, Fred B. Codes and Ciphers. Prentice Hall, 1992.