Kuakiatkan, . S. ., and W. . Saengsawang. “THE 21ST CENTURY ADMINISTRATIVE SKILLS OF SCHOOL ADMINISTRATORS UNDER CHACHOENGSAO VOCATIONAL INSTITUES”. Journal of MCU Social Science Review, vol. 10, no. 3, Sept. 2021, pp. 68-80, https://so03.tci-thaijo.org/index.php/jssr/article/view/252089.