(2007). Biggest online library of OPM now available for Pinoy's globally. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Biggest Online Library of OPM Now Available for Pinoy's Globally." Manila Bulletin 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Biggest Online Library of OPM Now Available for Pinoy's Globally." Manila Bulletin, 2007.
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