Hiranphicha, Nachita. “Perceptions of Administrators toward Work Performance Competency of Secretaries in Rajamangala University of Technology Thanyaburi”. Rajapark Journal 14, no. 35 (August 20, 2020): 149–162. accessed September 24, 2026. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/240935.