APA (7th ed.) Citation
Schneier, B. (1995). E-mail security: How to keep your electronic messages private. John Wiley & Sons.
Chicago Style (17th ed.) Citation
Schneier, Bruce. E-mail Security: How to Keep Your Electronic Messages Private. New York: John Wiley & Sons, 1995.
MLA (9th ed.) Citation
Schneier, Bruce. E-mail Security: How to Keep Your Electronic Messages Private. John Wiley & Sons, 1995.
Warning: These citations may not always be 100% accurate.