APA (7th ed.) Citation

Chapman, D. B. (1995). Building internet firewalls. O'Reilly.

Chicago Style (17th ed.) Citation

Chapman, D. Brent. Building Internet Firewalls. Sebastopol, CA: O'Reilly, 1995.

MLA (9th ed.) Citation

Chapman, D. Brent. Building Internet Firewalls. O'Reilly, 1995.