Garfinkel, S. und Spafford, G. (1996) Practical UNIX and Internet security [book]. 2. ed., completely rewritten and expanded to include Internet security, Computer security. 2. ed., completely rewritten and expanded to include Internet security. Cambridge [u.a.]: O’Reilly.

Garfinkel, Simson, und Gene Spafford. Practical UNIX and Internet security. Book. Computer security. 2. ed., completely rewritten and expanded to include Internet security. Cambridge [u.a.]: O’Reilly, [1996?], Cambridge [u.a.]: O’Reilly, [1996?].

Garfinkel, S., & Spafford, G. (ca. 1996). Practical UNIX and Internet security [Book]. In Computer security (2. ed., completely rewritten and expanded to include Internet security). O’Reilly.

Garfinkel, S., und G. Spafford. „Practical UNIX and Internet security“. Computer security, 2. ed., completely rewritten and expanded to include Internet security, book, O’Reilly, 1996.

GARFINKEL, Simson und Gene SPAFFORD, 1996. Practical UNIX and Internet security. 2. ed., completely rewritten and expanded to include Internet security. Cambridge [u.a.]: O’Reilly. ISBN 1565921488