Lilian, Ganira Khavugwi, and Odundo Paul Amollo. “Influence of Pedagogical Content Knowledge on Teacher Trainee Professional Competency at University of Nairobi, Kenya”. American Journal of Education and Learning 5, no. 1 (November 7, 2019): 1–12. Accessed May 5, 2024. https://onlinesciencepublishing.com/index.php/ajel/article/view/75.