Aliyu, I., Garba, Y., and M. Gana. “Survey of Weeds on Irrigated Farmlands in Bakolori-Area of Sudan Savanna-Nigeria”. Journal of Agricultural Economics, Environment and Social Sciences, Vol. 5, no. 1 and 2, Dec. 2019, pp. 99-104, http://www.jaeess.com.ng/index.php/jaeess/article/view/14.