Bwala, Madu Ali, and Wasiu Alani. “Comparative Profitability Analysis of Cowpea and Soybean Enterprises in Niger State of Nigeria”. Journal of the Bangladesh Agricultural University 18, no. 2 (June 30, 2020): 471–478. Accessed July 17, 2024. https://banglajol.info/index.php/JBAU/article/view/73656.