VACCA, J. R. (2005). FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER.
Chicago-čujuhus (17. p.)VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. NEW DELHI: ELSEVIER, 2005.
MLA-čujuhus (9. p.)VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER, 2005.
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