Jieratrakul, J. and Niyomyaht, S. (2019) “Effectiveness of Human Resource Development in The Secretariat of the Senate”, Rajapark Journal. Bangkok, Thailand, 13(30), pp. 13–28. available at: https://so05.tci-thaijo.org/index.php/RJPJ/article/view/127458 (accessed: 13 September 2026).