SULAIMAN, H. A.; HUSSAINI, A. Items Analysis of Mathematics Basic Education Certificate Examination in Junior Secondary Schools Before and After Covid-19 Lockdown in Sokoto State. African Journal of Humanities and Contemporary Education Research , [S. l.], v. 11, n. 1, p. 243–257, 2023. Disponível em: https://publications.afropolitanjournals.com/index.php/ajhcer/article/view/474. Acesso em: 27 oct. 2026.