Παραπομπή APA
Speed, T., & Ellis, J. (2003). Internet security: A jumpstart for systems administrators and IT managers. Amsterdam ; London: Digital Press.
Παραπομπή Chicago StyleSpeed, Tim., and Juanita Ellis. Internet Security: A Jumpstart for Systems Administrators and IT Managers. Amsterdam ; London: Digital Press, 2003.
Παραπομπή MLASpeed, Tim., and Juanita Ellis. Internet Security: A Jumpstart for Systems Administrators and IT Managers. Amsterdam ; London: Digital Press, 2003.
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