Wakariti Muriuki, Rebecca. “Influence of Professional Development of Mathematics Heads of Departments on Students’ Performance in Public Secondary Schools in Kenya”. KEMI Journal of Educational Leadership and Management 3, no. 1 (June 1, 2024): 169–183. Accessed May 3, 2025. https://journal.kemi.ac.ke/index.php/kjelm/article/view/9.