Παραπομπή APA

Cross, M. (2007). Security+ study guide & DVD training system (2nd ed.). Burlington, MA: Syngress Pub..

Παραπομπή Chicago Style

Cross, Michael. Security+ Study Guide & DVD Training System. 2nd ed. Burlington, MA: Syngress Pub., 2007.

Παραπομπή MLA

Cross, Michael. Security+ Study Guide & DVD Training System. 2nd ed. Burlington, MA: Syngress Pub., 2007.

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