ኃይለ ገብርኤል . ዳ. “ስለመሓይምናን ትምህርት የተደረገ ጥናት”. The Ethiopian Journal of Education, vol. 5, no. 1, Dec. 2024, pp. 2-21, http://213.55.95.79/index.php/EJE/article/view/11033.