APA (7th ed.) Zitazioa
Crayton, C. A. (2003). Security+ exam guide. Charles River Media.
Chicago Style (17th ed.) Zitazioa
Crayton, Christopher A. Security+ Exam Guide. Hingham, Mass.: Charles River Media, 2003.
MLA (9th ed.) Zitazioa
Crayton, Christopher A. Security+ Exam Guide. Charles River Media, 2003.
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