Influence of English Proficiency on Junior Secondary School Achievement in Social Studies in Osun State, Nigeria. Journal of Educational and Social Research, London, U.K., v. 2, n. 2, p. 29, 2012. Disponível em: https://www.richtmann.org/journal/index.php/jesr/article/view/11805.. Acesso em: 19 may. 2024.