Kayere, Pamella, and Moses Kapkiai. “Group Work As a Determinant for Academic Progress of Learners With Hearing Impairment in Early Childhood Education in Turbo Sub-County, Kenya”. Africa Journal of Technical and Vocational Education and Training 2, no. 1 (October 1, 2017): 75-84. Accessed February 29, 2020. https://afritvet.org/index.php/Afritvet/article/view/38.