ketphuwong, Pharamee, Theeraphon Pengchan, and Pimporn Charuchit. 2026. “COACHING SKILLS DEVELOPMENT PROGRAM OF SCHOOL ADMINISTRATORS UNDER THE UDONTHANI SECONDARY EDUCATIONAL SERVICE AREA OFFICE”. Journal of Graduate School Sakon Nakhon Rajabhat University 23 (102). Sakon Nakhon, Thailand:584-601. https://so02.tci-thaijo.org/index.php/SNGSJ/article/view/281081.