Okafor, J.N.C., et al. “Effect of Roasted Bambara Groundnut (Voandzeia Subterranea) Fortification on Quality and Acceptability of Biscuits”. Pakistan Journal of Nutrition, vol. 14, no. 10, Sept. 2015, pp. 653–657, https://doi.org/10.3923/pjn.2015.653.657.