Bezu, K. H., B. W. Chala, and M. W. Itticha. “Economic Efficiency of Wheat Producers: The Case of Debra Libanos District, Oromia, Ethiopia”. Turkish Journal of Agriculture - Food Science and Technology, vol. 9, no. 6, June 2021, pp. 953-60, doi:10.24925/turjaf.v9i6.953-960.4244.