Saligumba, Ian Paul Bayron, and Lester Lou Benguar Segumpan. “Mathematics Performance and Self-Efficacy of Grade-9Students in a Differentiated Assessment”. International Journal of English and Education 8, no. 1 (January 25, 2019): 477–490. Accessed November 6, 2026. https://ijee.org/ijee/article/view/473.