KUMARI, H. M. L. . Instructional Supervision by Principals in Type 1C and Type 2 Schools in the Gampaha District Sri Lanka. International Journal on Integrated Education, [S. l.], v. 5, n. 8, p. 117–125, 2022. DOI: 10.31149/ijie.v5i8.3433. Disponível em: https://journals.researchparks.org/index.php/IJIE/article/view/3433. Acesso em: 18 sep. 2026.