Gatpatan, M. V. (1998). The challenges of the party-list system. IN United Notions [column]. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times, 1998.
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