Aifah, Siti Nor', Moh. Heru Budihantho, and Semuel Risal. 2026. “Principal Leadership Strategy in Developing Teacher Professional Competence at SDN Tinggiran II.1, Barito Kuala Regency”. International Journal of Integrative Sciences 5 (6):771-84. https://doi.org/10.55927/ijis.v5i6.43.