Abera Getachew Obsa, and Berihu Angesom Weldihane. 2017. “Knowledge and Self- Efficacy on HIV AIDS Among Undergraduate Students of Madda Walabu University, Southeast Ethiopia”. Global Journal of Human-Social Science 17 (G1):61-68. https://socialscienceresearch.org/index.php/GJHSS/article/view/1972.