Otieno, H. M. O., G. N. Chemining‘wa, C. K. Gachene, and S. Zingore. “Economics of Maize and Bean Production: Why Farmers Need to Shift to Conservation Agriculture for Sustainable Production”. Turkish Journal of Agriculture - Food Science and Technology, vol. 7, no. 10, Oct. 2019, pp. 1548-53, doi:10.24925/turjaf.v7i10.1548-1553.2566.