Sartika, N. D., S. Sutrisno, and E. Darmawati. “Economyc Analysis of Soybean Thresher Operation (Case Studies: Majalengka Subdistrict, Majalengka Regency)”. Jurnal Ilmiah Rekayasa Pertanian Dan Biosistem, vol. 6, no. 2, Sept. 2018, pp. 114-2, doi:10.29303/jrpb.v6i2.83.