APA引文

(2003). Norton Antivirus 9.0. Ireland: Symantec.

Trích dẫn kiểu Chicago

Norton Antivirus 9.0. Ireland: Symantec, 2003.

MLA引文

Norton Antivirus 9.0. Ireland: Symantec, 2003.

警告：这些引文格式不一定是100％准确.