แดงบรรจง ว., แสงมณี ว., and โรจน์นิรุตติกุล ณ. “Factors Affecting Organizational Commitment of Employees in Kulthorn Electric Company Limited”. Journal of Industrial Education, vol. 14, no. 2, Aug. 2015, pp. 503-10, https://ph01.tci-thaijo.org/index.php/JIE/article/view/122462.