Chapman, D. B. (1995). Building internet firewalls. O'Reilly.
Chicago Style (17th ed.) ZitazioaChapman, D. Brent. Building Internet Firewalls. Sebastopol, CA: O'Reilly, 1995.
MLA (9th ed.) ZitazioaChapman, D. Brent. Building Internet Firewalls. O'Reilly, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.