Thadawiriyachot, T., and N. Sohheng. “The Study of Competency of Government Administrators of The Secretariat of the House of Representatives”. Rajapark Journal, vol. 13, no. 30, Sept. 2019, pp. 133-41, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/124262.