APA (7th ed.) Citation

Schneier, B. (1995). E-mail security: How to keep your electronic messages private. Wiley.

Chicago Style (17th ed.) Citation

Schneier, Bruce. E-mail Security: How to Keep Your Electronic Messages Private. New York: Wiley, 1995.

MLA (9th ed.) Citation

Schneier, Bruce. E-mail Security: How to Keep Your Electronic Messages Private. Wiley, 1995.