School principals as leaders: Pre-service and in-service teachers’ perspective. New Trends and Issues Proceedings on Humanities and Social Sciences, [S. l.], v. 5, n. 3, p. 109–117, 2018. DOI: 10.18844/prosoc.v5i3.3916. Disponível em: https://un-pub.eu/ojs/index.php/pntsbs/article/view/3916. Acesso em: 24 nov. 2024.