Syngress Media, I. (2001). Test your CCNA Cisco Certified Network Associate (0 07 212668 X). McGraw-Hill.
Trích dẫn kiểu ChicagoSyngress Media, Inc. Test Your CCNA Cisco Certified Network Associate (0 07 212668 X). McGraw-Hill, 2001.
MLA citiranjeSyngress Media, Inc. Test Your CCNA Cisco Certified Network Associate (0 07 212668 X). McGraw-Hill, 2001.
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