Lopez, E. H. (1999). Microsoft Philippines intensities campaign against software piracy. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLopez, Edu H. "Microsoft Philippines Intensities Campaign Against Software Piracy." Manila Bulletin 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLopez, Edu H. "Microsoft Philippines Intensities Campaign Against Software Piracy." Manila Bulletin, 1999.
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