IYAYA, M. W. The Relationship between Principal Leadership Style and Student Discipline Problems in Secondary Schools. The International Journal of Humanities & Social Studies, [S. l.], v. 5, n. 7, 2017. Disponível em: https://internationaljournalcorner.com/index.php/theijhss/article/view/125700. Acesso em: 23 jul. 2024.