ORCULLO , Virgilio. A Comparative-Correlational Study of the Instructional Supervisory Competence of School Leaders. International Journal of Education, Research, and Innovation Perspectives, Philippines, v. 2, n. 8, p. 321–382, 2026. DOI: 10.5281/zenodo.21833412. Disponível em: https://ijerip.erio.org.ph/index.php/articles/article/view/1432. Acesso em: 10 aug. 2026.