Siwilai, C., Khanthahat, P., & Yeunyong, T. (2022). Organizational Management Factors and Core Competencies of Personnel Affecting Effectiveness of Lopburi Province. Rajapark Journal, 16(48), 512–528. retrieved from https://so05.tci-thaijo.org/index.php/RJPJ/article/view/258468