“The Role of Higher Diploma Program in Improving Trained Teachersa Classroom Teaching Methods: Focused on Selected CTE of Oromia”. Global Journal of Human-Social Science 17, no. G1 (March 20, 2017): 5–39. Accessed September 29, 2026. https://www.socialscienceresearch.org/index.php/GJHSS/article/view/101378.