UMARU, D.; ALHAJI, K.; BASHEER, H. A. Level of Principals’ Instructional Supervision in Secondary Schools in Danko Wasagu Local Government Area of Kebbi State. African Journal of Humanities and Contemporary Education Research , [S. l.], v. 8, n. 2, p. 77–90, 2022. Disponível em: https://publications.afropolitanjournals.com/index.php/ajhcer/article/view/261. Acesso em: 27 oct. 2026.