Supervisory Competencies of School Heads in Relation to Teachers’ Performance : . JÉ«»¨ÌÃÂÛ̳ Institutional É«»¨ÌÃÂÛ̳, [S. l.], v. 12, n. 1, p. 54–68, 2019. DOI: . Disponível em: /index.php/irj/article/view/744. Acesso em: 7 jun. 2025.