Chidi, Anosike Francis, et al. “Proximate Composition and Sensory Properties of Ukpo Oka: A Steamed Maize Pudding Formulated from Maize and African Yam Bean Flour”. Pakistan Journal of Nutrition, vol. 18, no. 8, July 2019, pp. 795–799, https://doi.org/10.3923/pjn.2019.795.799.