(2009). 2010 race too close to call, says Pulse poll. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"2010 Race Too Close to Call, Says Pulse Poll." Philippine Daily Inquirer 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"2010 Race Too Close to Call, Says Pulse Poll." Philippine Daily Inquirer, 2009.
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