Battad, Jovelle L. “Instructional Leadership Skills of School Heads and Its Relation to the Self-Efficacy of Elementary Teachers in Castillejos District”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 5, no. 8, Aug. 2024, pp. 3071-8, https://doi.org/10.11594/ijmaber.05.08.12.