Ashraf, Jameela. “Equal Effectiveness of Kumon Method of Teaching Mathematics Among Boys &Amp; Girls”. Journal of English Language and Literature (ISSN: 2368-2132) 9, no. 3 (June 30, 2018): 906–913. Accessed October 11, 2025. https://techmindresearch.org/index.php/jell/article/view/370.