Cacayorin, R., . L. Almodiel, . R. L. Angara, J. K. Bulosan, M. E. Pajarillo, and R. D. . Mosqueda, Ph.D. CRIM. “The Effectiveness of Checkpoint Conducted by the Philippine National Police at Batasan Hills During Campaign Period”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 1, no. 1, Apr. 2019, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1542.