BARBERAN , Lilian; GONZALES , Maria Luisa. Transformational Leadership In Private Higher Education Institutions (HEIS): The Role Of Program Administrators In Driving Institutional Excellence In Sorsogon Province. International Journal of Education, Research, and Innovation Perspectives, Philippines, v. 2, n. 4, p. 1833–1868, 2026. DOI: 10.5281/zenodo.19953507. Disponível em: https://ijerip.erio.org.ph/index.php/articles/article/view/566. Acesso em: 2 may. 2026.