Tabem, P., and T. Rojanatrakul. “Factors Influencing the Effectiveness of Human Resource Development of Local Administrative Organizations in Chondan District, Phetchabun Province”. Journal of Modern Learning Development, vol. 8, no. 12, Dec. 2023, pp. 90-102, https://so06.tci-thaijo.org/index.php/jomld/article/view/263133.