Siwilai, Chamlueng, Phamorn Khanthahat, and Tanisorn Yeunyong. “Organizational Management Factors and Core Competencies of Personnel Affecting Effectiveness of Lopburi Province”. Rajapark Journal 16, no. 48 (October 30, 2022): 512–528. Accessed April 19, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/258468.