“Pendampingan Dalam Penentuan Harga Pokok Produksi Kopi RKB Roastery Banjarsengon Kabupaten Jember”. Journal Of Indonesian Social Society (JISS), vol. 3, no. 2, June 2024, pp. 99-105, https://doi.org/10.59435/jiss.v3i2.496.