Sicharoen, Meechai. “The Developmental Guidelines of Instructional System for Building Morality, Ethics, Code of Conduct of Police Profession for Police Cadet”. Rajapark Journal 12, no. 26 (September 4, 2018): 114–132. Accessed April 19, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/145106.