Kumssa, Teferi. “Valency-Adjusting Constructions in Rayya Oromo: Causative and Middle”. Ethiopian Journal of Business and Social Sciences 6, no. 2 (July 28, 2024): 66-81. Accessed June 23, 2025. https://survey.amu.edu.et/ojs/index.php/EJBSS/article/view/456.