Buapong P, Chienwattanasook K. Teachers Leadership and Work Environment That Influence the Effectiveness of Teachers Performance in Secondary School Level. JMSNPRU [internet]. 2021 Jun. 30 [cited 2026 Oct. 9];8(1):50-62. available from: https://so03.tci-thaijo.org/index.php/JMSNPRU/article/view/253262