A. . Busico, “Instructional Competence and Supervisory Skills of Public Elementary School Heads in Relation to Teachers Performance”, Int. Multidiscip. J. Res. Innov. Sustain. Excell. , vol. 1, no. 6, pp. 167–182, Jun. 2024, Accessed: Jul. 18, 2026. [Online]. Available: https://risejournals.org/index.php/imjrise/article/view/464