Hajon AJ, Aslamiah A, Sulaiman S. Principal Strategy in Developing Teacher Professional Competence to Improve Quality of Education. FJMR [Internet]. 2024 Aug. 28 [cited 2026 Apr. 27];3(8):3099-108. Available from: https://journal.formosapublisher.org/index.php/fjmr/article/view/10708