Weerasin, Witoon. “The Study Effectiveness of Implementation of Development Strategic Plan for Phetchabun Province”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 10, no. 1 (July 14, 2020): 538–547. Accessed April 20, 2024. https://so01.tci-thaijo.org/index.php/AJMBU/article/view/247259.