Saephu, Natcha, and Rachen Noppanatwongsakorn. 2022. “Factors Effecting the Performance Efficiency of Official of Office of the Bangkok Metropolitan Administration Civil Service Commission”. Journal of Graduate MCU KhonKaen Campus 9 (1):181-93. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/254473.