Tunyapanich, H., S. Laohapan, W. Sudtachai, N. Somboon, A. Chaisena, and K. Dessimm. “The Quality of Work of Local Personnel, Tambon Administrative Organization Nam Nao District, Phetchabun Province”. Academic Journal of Mahamakut Buddhist University Roi Et Campus, vol. 10, no. 1, Jan. 2020, pp. 35-43, https://so01.tci-thaijo.org/index.php/AJMBU/article/view/228639.