Bwala, M. A., S. A. Tiamiyu, and A. Y. Kolo. “Analysis of Land Tillage Practices and Related Problems Among Rice Farmers in the Tropic of Sub-Saharan Africa”. Journal of the Bangladesh Agricultural University, vol. 16, no. 1, Apr. 2018, pp. 98-103, doi:10.3329/jbau.v16i1.36488.