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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGatpatan, Marlene V. "Another Battle for Intramuros. IN Commentary [column]." Philippine Daily Inquirer 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGatpatan, Marlene V. "Another Battle for Intramuros. IN Commentary [column]." Philippine Daily Inquirer, 1998.
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