Caldez, E. (2001). 28 Cagayan towns listed as hot spots. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCaldez, Estanislao. "28 Cagayan Towns Listed as Hot Spots." Philippine Daily Inquirer 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCaldez, Estanislao. "28 Cagayan Towns Listed as Hot Spots." Philippine Daily Inquirer, 2001.
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