Aifah SN, Budihantho MH, Risal S. Principal Leadership Strategy in Developing Teacher Professional Competence at SDN Tinggiran II.1, Barito Kuala Regency. IJIS [Internet]. 2026 Jun. 30 [cited 2026 Jul. 15];5(6):771-84. Available from: https://journalijis.my.id/index.php/ijis/article/view/43