Otuaro, E. A., and J. K. Adewumi. “Evaluation of on-Farm Drainage System in Nigeria: A Review”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 20, no. 1, Mar. 2024, pp. 107-12, https://azojete.com.ng/index.php/azojete/article/view/862.