Butkaew, Poonsak, and Tawil Ladawan. “STRATEGY FOR PROFESSIONAL COMPETENCY DEVELOPMENT OF PRIMARY SCHOOL ADMINISTRATORS IN NAKHON RATCHASIMA PRIMARY EDUCATION AREA”. Journal of Graduate MCU KhonKaen Campus 6, no. 4 (December 26, 2019): 235–250. Accessed May 5, 2024. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/227630.