Cita APA (7a ed.)

Gonçalves, M. (1997). Protecting your Web sites with firewalls. Prentice Hall.

Cita Chicago Style (17a ed.)

Gonçalves, Marcus. Protecting Your Web Sites with Firewalls. Upper Saddle River, NJ: Prentice Hall, 1997.

Cita MLA (9a ed.)

Gonçalves, Marcus. Protecting Your Web Sites with Firewalls. Prentice Hall, 1997.