Palaphon, Chookait, Inthuraporn Intaraprajob, and Somsak Chanphong. “The Safety Road and Volunteer of Traffic Accident Prevention in Chaiyaphum Province”. Journal of Modern Learning Development 6, no. 6 (October 8, 2021): 11–29. accessed September 28, 2026. https://so06.tci-thaijo.org/index.php/jomld/article/view/250080.