Cita APA (7a ed.)

Zwicky, E. D., Cooper, S., & Chapman, D. B. (2000). Building Internet Firewalls: Internet and Web security (2nd ed.). O'Reilly.

Cita Chicago Style (17a ed.)

Zwicky, Elizabeth D., Simon Cooper, y D. Brent Chapman. Building Internet Firewalls: Internet and Web Security. 2nd ed. Beijing ; Cambridge, Mass.: O'Reilly, 2000.

Cita MLA (8a ed.)

Zwicky, Elizabeth D., et al. Building Internet Firewalls: Internet and Web Security. 2nd ed. O'Reilly, 2000.