BRINIA, Vasiliki; TSOUNI, Vasiliki. Management and Leadership: Perceptions of Principals and Teachers of the Secondary Education Directorate. International Journal of Academic Research in Progressive Education and Development, [S. l.], v. 6, n. 1, 2017. Disponível em: https://ijarped.com/index.php/journal/article/view/315. Acesso em: 2 aug. 2025.