BARA’U, R.; SULEIMAN, R. I. Analysis of the Theories Purposes, Functions and Methods of Supervision: Yesterday, Today and Tomorrow. African Journal of Humanities and Contemporary Education Research , [S. l.], v. 10, n. 1, p. 244–252, 2023. Disponível em: https://publications.afropolitanjournals.com/index.php/ajhcer/article/view/393. Acesso em: 27 oct. 2026.