Otitoju, G.T.O., O. Otitoju, J.U. Nwamarah, and S.O. Baiyeri. 2015. “Comparative Study of the Nutrient Composition of Four Varieties of Cowpea (Vigna Unguiculata) and Their Products (Beans-Based Products)”. Pakistan Journal of Nutrition 14 (9): 540–546. https://doi.org/10.3923/pjn.2015.540.546.