“The Role of Higher Diploma Program in Improving Trained Teachersa Classroom Teaching Methods: Focused on Selected CTE of Oromia” (2017) Global Journal of Human-Social Science, 17(G1), pp. 5–39. Available at: https://socialscienceresearch.org/index.php/GJHSS/article/view/101378 (Accessed: 19 February 2026).