AbdulkadirM., and NuhuA. “FARMERS’ PERCEPTION OF FADAMA SOIL FERTILITY ALONG CHALLAWA RIVER, KANO STATE, NIGERIA”. FUDMA JOURNAL OF SCIENCES, Vol. 4, no. 1, Apr. 2020, pp. 756 -3, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/114.