Sudarko, S., S. Sumardjo, A. Fatchiya, and P. Tjitropranoto. “Factors Affecting Entrepreneurial Capacity Building of Smallholder Coffee Farmers in East Java Province”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 36, no. 1, Apr. 2020, pp. 84–95, doi:10.22302/iccri.jur.pelitaperkebunan.v36i1.389.