Olayinka , A., A. Kolawole, and C. Ilori. “Assessment of Variation in the Agronomic Traits of Wild Cowpea (Vigna Unguiculata (L.) Walp.) Subspecies under a Rainforest Agro-Ecology in Nigeria”. GSC Biological and Pharmaceutical Sciences, vol. 11, no. 3, June 2020, pp. 244-53, doi:10.30574/gscbps.2020.11.3.0188.