Caldez, E. (2001). 28 Cagayan towns listed as hot spots. Philippine Daily Inquirer.
Chicago-viite (17. p.)Caldez, Estanislao. "28 Cagayan Towns Listed as Hot Spots." Philippine Daily Inquirer 2001.
MLA-viite (9. p.)Caldez, Estanislao. "28 Cagayan Towns Listed as Hot Spots." Philippine Daily Inquirer, 2001.
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