Meenonthongmahasan, Prucha, Phra Nitat Wongwangphoem, Jakkrapong Fongchai, and Narong Sornvongkaew. “Duty Performance of Traffic Police under Royal Thai Police up on Opinions of People in the Area of, Chum Phae Municipality, Chumphae District, KhonKaen Province”. Dhammathas Academic Journal 18, no. 3 (December 26, 2018): 67–78. accessed March 6, 2026. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/114126.