Kumari, H. M. Lalitha. “Instructional Supervision by Principals in Type 1C and Type 2 Schools in the Gampaha District Sri Lanka”. International Journal on Integrated Education 5, no. 8 (August 29, 2022): 117-125. Accessed May 1, 2024. https://journals.researchparks.org/index.php/IJIE/article/view/3433.