Sukprasert, P., Roonapai, R., Khemtong, P., & Tipanark, P. (2003). Training Standard of Extension and Training Office, Kasetsart University for Assuring Educational Quality. Kasetsart Journal of Social Sciences, 24(2), 123–132. retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/243380