Ayogu R. N., Nnam N. M., and Mba M. “Evaluation of Two Local Cowpea Species for Nutrient, Antinutrient, and Phytochemical Compositions and Organoleptic Attributes of Their Wheat-Based Cookies”. Food & Nutrition Research, vol. 60, Jan. 2016, doi:10.3402/fnr.v60.29600.