Lopez, E. H. (1999). Elimination of software piracy makes a storng IT foundation. Manila Bulletin.
Chicago-viite (17. p.)Lopez, Edu H. "Elimination of Software Piracy Makes a Storng IT Foundation." Manila Bulletin 1999.
MLA-viite (9. p.)Lopez, Edu H. "Elimination of Software Piracy Makes a Storng IT Foundation." Manila Bulletin, 1999.
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