Motuma, Niguse, Hirpa Legesse, and Legesse Wolde. 2015. “Evaluation of Quality Protein Maize Hybrids for Yield, Association of Yield With Its Components and Other Agronomic Traits at Bako, Ethiopia”. Journal of Science, Technology and Arts Research 4 (3):18-25. https://journals.wgu.edu.et/index.php/star/article/view/237.