Endris Assen Ebrahim. 2016. “Multivariate Analysis of Factors Influencing Achievement of Students in Selected Subjects at Secondary School Level: A Case Study of Grade 10 Students at Hawassa City, Ethiopia”. Global Journal of Human-Social Science 16 (G2):25-47. https://socialscienceresearch.org/index.php/GJHSS/article/view/1705.