MORRISON, I. O.; AFOKEGHENE, O. S. Constraints to Principals Administration Effectiveness in Secondary Schools in Delta State, Nigeria. The International Journal of Humanities & Social Studies, [S. l.], v. 8, n. 3, 2020. DOI: 10.24940/theijhss/2020/v8/i3/HS2003-031. Disponível em: https://www.internationaljournalcorner.com/index.php/theijhss/article/view/151856. Acesso em: 2 jun. 2024.