Nakmanee, N., and R. Noppanatwongsakorn. “MOTIVATION FOR THE PERFORMANCE OF DUTIES BY THE GOVERNMENT OFFICER OF THE OFFICE OF EDUCATION IN BANGKOK”. Journal of Graduate MCU KhonKaen Campus, Vol. 8, no. 1, Mar. 2021, pp. 61-71, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/246240.