APA (7th ed.) Citation

Garfinkel, S., & Spafford, G. (1991). Practical UNIX security / Simson Garfinkel and Gene Spafford. O'Reilly & Associates.

Chicago Style (17th ed.) Citation

Garfinkel, Simson, and Gene Spafford. Practical UNIX Security / Simson Garfinkel and Gene Spafford. Sebastopol, CA: O'Reilly & Associates, 1991.

MLA (9th ed.) Citation

Garfinkel, Simson, and Gene Spafford. Practical UNIX Security / Simson Garfinkel and Gene Spafford. O'Reilly & Associates, 1991.

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