Alaka, I., A. Limo, and R. Andambi. “Utilization of Instructional Materials for Personalized Learning of Mathematics in Public Primary Schools: A Case of Eldoret East Sub County, Kenya”. The International Journal of Humanities & Social Studies, vol. 5, no. 8, Aug. 2017, https://internationaljournalcorner.com/index.php/theijhss/article/view/125800.