Siritachaphat, N., K. Uarun, and N. Taecharushpasu. “The Developing of Human Resource Management Programs and Manpower Replacement for Absenteeism of Security Personnel”. Vocational Education Central Region Journal, vol. 2, no. 2, Dec. 2018, pp. 46-20, https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246499.