“Teachersa Qualification And Subject Mastery As Predictors Of Achievement In English Language In Ibarapapa Division Of Oyo State” (2012) Global Journal of Human-Social Science, 12(A3), pp. 1–6. Available at: https://socialscienceresearch.org/index.php/GJHSS/article/view/100141 (Accessed: 5 February 2026).