Syaridawati, Ondeng S, Mustami K. Improving Teacher Professionalism Through Classroom Action Research to Achieve Better National Education Quality. GRDIS [Internet]. 2025 Oct. 23 [cited 2026 Sep. 12];5(4):117-26. Available from: https://www.goldenratio.id/index.php/grdis/article/view/980