MANGA, Sani Dantani. Causes and Consequences of Over-schooling among Teachers in Educational Institutions in Kebbi State, Nigeria: Policy Considerations for Educational Managers. NIU Journal of Humanities, [S.l.], v. 3, n. 4, p. 123-130, feb. 2019. ISSN 3007-1712. Disponible en: <https://www.niujournals.ac.ug/ojs/index.php/niuhums/article/view/422>. Fecha de acceso: 05 abr. 2026