Saengtreesu, P. “The Participation in Solving the Problem of Road Fatalities in the Nayoong District, Udonthani Province”. Academic Journal of Mahamakut Buddhist University Roi Et Campus, vol. 10, no. 2, Apr. 2021, pp. 560-9, https://so01.tci-thaijo.org/index.php/AJMBU/article/view/249863.