Olayinka, Bolaji Umar, Rhoda F. Ogungbemi, Monsurat Olaide Babatunde, Hussaina Ummikhanni Mahmud, and Goodluck O. Ogundare. “Comparative Assessment of Chlorophyll Content, Yield Parameters and Nutrients of Three Varieties of Cowpea (<i>Vigna Unguiculata (L.) Walp</I>)”. Science World Journal 20, no. 4 (March 18, 2026): 1746–1751. Accessed October 8, 2026. https://www.ajol.info/index.php/swj/article/view/319834.