K. Ukpai Ifegwu and J. Olusegun Ajetomobi, “Consumers’ Preference for Cowpea in Nigeria”, Int. J. Agric. Manag. Dev., vol. 4, no. 1, pp. 19–26, Mar. 2014, Accessed: Apr. 30, 2026. [Online]. Available: https://oiccpress.com/ijamad/article/view/6715