Inyega, Justus O., and Hellen N. Inyega. “Teachers’ Pedagogical Content Knowledge Following In-Service Training in Kenya”. The International Journal of Humanities & Social Studies 5, no. 5 (May 31, 2017). Accessed May 19, 2024. http://internationaljournalcorner.com/index.php/theijhss/article/view/125346.