APA (7th ed.) Citation

Garfinkel, S., & Spafford, G. (1991). Practical Unix security. O'Reilly & Associates, Inc.

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

Garfinkel, Simson, and Gene Spafford. Practical Unix Security. O'Reilly & Associates, Inc, 1991.

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