Lamptey, S., G. Nyarko, A. Falon, and S. Yeboah. “Assessing the Performance of Sorghum Varieties in the Guinea Savanna Zone of Ghana”. Asian Journal of Agriculture and Food Sciences, vol. 2, no. 1, Feb. 2014, https://www.ajouronline.com/index.php/AJAFS/article/view/947.