Wakwoya, Fanta. “Effects of School Based Supervision on Teachers’ Teaching Effectiveness in Secondary Schools of Horro Guduru Wallaga Zone, Ethiopia”. Journal of Science, Technology and Arts Research 10, no. 2 (June 27, 2021): 53–67. Accessed December 22, 2024. https://journals.wgu.edu.et/index.php/star/article/view/798.