Sangjunnual, C., P. . Uthaphun, and P. . Chachikul. “AN ANALYTICAL STUDY OF IDDHIPADA APPLICATION IN DUTY PERFORMANCE OF POLICE OFFICERS, THE INVESTIGATION DIVISION, PROVINCIAL POLICE REGION 4”. Journal of Graduate MCU KhonKaen Campus, vol. 8, no. 1, Mar. 2021, pp. 152-60, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/244630.