Siririn, Jakkrit, Kannika Chaowatthanakun, and Uraphen Yimprasert. “Continuing educational institution quality management with Kaizen concept”. National interest 3, no. 11 (April 30, 2023): 60–66. accessed March 16, 2025. https://sc01.tci-thaijo.org/index.php/NIT/article/view/240464.