Comparative Analysis of the Reliability and Validity Coefficients of WAEC, NECO and NABTEB Constructed Mathematics Examination. Journal of Educational and Social Research, London, U.K., v. 3, n. 2, p. 397, 2013. Disponível em: https://www.richtmann.org/journal/index.php/jesr/article/view/186.. Acesso em: 5 may. 2024.