Jieratrakul, Jittrakan, and Satit Niyomyaht. “Effectiveness of Human Resource Development in The Secretariat of the Senate”. Rajapark Journal 13, no. 30 (September 15, 2019): 13–28. Accessed April 26, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/127458.