Citazione Stile APA (7a Edizione)

Chapman, B. D., & Zwicky, E. D. (1995). Building internet firewalls. O'Reilly & Associates.

Citazione stile Chigago Style (17a edizione)

Chapman, Brent D., e Elizabeth D. Zwicky. Building Internet Firewalls. Sebastopol Calif: O'Reilly & Associates, 1995.

Citatione MLA (9a ed.)

Chapman, Brent D., e Elizabeth D. Zwicky. Building Internet Firewalls. O'Reilly & Associates, 1995.