Temesgen, Asfaw. “Trend Analysis of Agricultural Cooperatives in Coffee Marketing: Case of Oromia Coffee Farmers’ Cooperative Union, Oromia, Ethiopia”. Science, Technology and Arts Research Journal 5, no. 3 (September 28, 2016): 67–76. Accessed July 23, 2026. https://journals.wgu.edu.et/index.php/star/article/view/328.