Lamessa, Kinde, Sharma J.J, and Taye Tessema. 2015. “Influence of Cowpea and Soybean Intercropping Pattern and Time of Planting on Yield and Gross Monetary Value of Sorghum”. Science, Technology and Arts Research Journal 4 (3):38-46. https://journals.wgu.edu.et/index.php/star/article/view/241.