Campbell, P. (2003). Security+ guide to network security fundamentals [ada CD]Paul Campbell, Ben Calvert, Steven Boswell. Thomson Learning.
Chicago-viite (17. p.)Campbell, Paul. Security+ Guide to Network Security Fundamentals [ada CD]Paul Campbell, Ben Calvert, Steven Boswell. Thomson Learning, 2003.
MLA-viite (8. p.)Campbell, Paul. Security+ Guide to Network Security Fundamentals [ada CD]Paul Campbell, Ben Calvert, Steven Boswell. Thomson Learning, 2003.
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