VACCA, J. R. (2005). FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER.
芝加哥风格引文VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. NEW DELHI: ELSEVIER, 2005.
MLA引文VACCA, J R. FIREWALLS JUMPSTART FOR NETWORK SYSTEMS ADMINISTRATORS. ELSEVIER, 2005.
警告：这些引文格式不一定是100％准确.