Cita APA (7a ed.)

VACCA, J. R. (2005). FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER.

Cita Chicago Style (17a ed.)

VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. NEW DELHI: ELSEVIER, 2005.

Cita MLA (9a ed.)

VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER, 2005.