Sukirno, S., M. Aritonang, and W. Fitrianti. “The Effect of Fresh Fruit Bunches Transportation Services on the Risk of Oil Palm Farming Income in Belangin Village, Sanggau Regency”. Jurnal Sosial Ekonomi Pertanian, vol. 18, no. 3, Aug. 2022, pp. 233-45, doi:10.20956/jsep.v18i3.20526.