Ojinnaka, M.C., and G.I. Onwuka. “Organoleptic Assessment of the Performance of Some Cultivars of Ipomoea Batatas in the Development of Selected Snack Products”. Pakistan Journal of Nutrition, vol. 10, no. 10, Sept. 2011, pp. 935–939, https://doi.org/10.3923/pjn.2011.935.939.