Porter, T. (2007). How to cheat at Voip security. Rockland, MA: Syngress.
シカゴスタイル引用形Porter, Thomas. How to Cheat At Voip Security. Rockland, MA: Syngress, 2007.
MLA引用形式Porter, Thomas. How to Cheat At Voip Security. Rockland, MA: Syngress, 2007.
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