Harnthong, Prapasiri, Sudarat Sarnswang, and Prompilai Buasuwan. 2025. “The Relationship Between Administrators’ Instructional Leadership and Teachers’ Self-Efficacy of District Learning Encouragement Center under Nonthaburi Office of Learning Encouragement”. Suan Dusit Graduate School Academic Journal 21 (3). Bankok, Thailand:59-70. https://so19.tci-thaijo.org/index.php/SDUGSAJ/article/view/1227.