Nummondee N, Saengsawang C, Prachongchit S. Quality Leadership of School Administrators under the Bangkok Secondary Educational Service Area Offices. JPR [internet]. 2025 Aug. 26 [cited 2026 Aug. 29];8(2):1-10. available from: https://so03.tci-thaijo.org/index.php/JPR/article/view/286239