Thongthip, B. (2023) “Personnel Development Maintains Security by Implementing the Quality Management Cycle in Organization (PDCA) Practice”, Dhammathas Academic Journal, 23(4), pp. 139–152. available at: https://so06.tci-thaijo.org/index.php/dhammathas/article/view/265126 (accessed: 15 March 2025).