APA (7th ed.) Citation

Garfinkel, S., Spafford, G., & SCHWARTZ, A. (2003). Practical Unix & Internet Security (3rd ed.). O'REILLY.

Chicago Style (17th ed.) Citation

Garfinkel, Simson, Gene Spafford, and ALAN SCHWARTZ. Practical Unix & Internet Security. 3rd ed. Beijing: O'REILLY, 2003.

MLA (8th ed.) Citation

Garfinkel, Simson, et al. Practical Unix & Internet Security. 3rd ed. O'REILLY, 2003.