APA
Wray P., . (2001). BPB computer course : including nortonantivirus 2002,30 days trial version. BPB, New Delhi: .
Chicago
Wray Paul, . 2001. BPB computer course : including nortonantivirus 2002,30 days trial version. BPB, New Delhi: .
Harvard
Wray P., . (2001). BPB computer course : including nortonantivirus 2002,30 days trial version. BPB, New Delhi: .
MLA
Wray Paul, . BPB computer course : including nortonantivirus 2002,30 days trial version. BPB, New Delhi: . 2001.