S. Kaewmanichai, W. Pengsawat, W. Chalakbang, and A. Pheasa, “THE LINEAR STRUCTURAL RELATIONSHIP MODEL OF FACTORS INFLUENCING EFFECTIVE TIME MANAGEMENT OF SCHOOL ADMINISTRATORS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE IN THE NORTHEAST REGION”, Education MCU, vol. 7, no. 1, pp. 242–253, Apr. 2020.