Visaya, Villamore Jr. (August 12, 2012). "Ilagan now 4th city in Cagayan Valley". INQUIRER.net | Philippine news for Filipinos. Archived from the original on August 14, 2012. Retrieved April 19, 2021.
Visaya, Villamore Jr. (August 12, 2012). "Ilagan now 4th city in Cagayan Valley". INQUIRER.net | Philippine news for Filipinos. Archived from the original on August 14, 2012. Retrieved April 19, 2021.