Perceived Influence of Principal’s Supervisory Roles on Effective Teachers’ Performance in Senior Secondary Schools in Rivers State East Senatorial Zone. International Journal of Modern Innovations and Knowledge, [S. l.], v. 2, n. 3, p. 141–149, 2021. Disponível em: https://ijmik.net/index.php/ijmik/article/view/75. Acesso em: 26 oct. 2025.