AGI, Ugochukwu Kysburn. Teacher Education and its Relevance to 21st Century Secondary School Education in Nigeria: The Perspective of an Educational Administrator. European Scientific Journal, ESJ, [S. l.], v. 15, n. 1, p. 242, 2019. DOI: 10.19044/esj.2019.v15n1p242. Disponível em: https://last.eujournal.org/index.php/esj/article/view/11675. Acesso em: 12 feb. 2026.