J. B. Pangkur, Hugolinus, Marthen R. Pellokila, and I Nyoman Sirma. “Faktor-Faktor Yang Mempengaruhi Produksi Kopi Arabika”. Journal of Agricultural Socio-Economics (JASE) 1, no. 2 (November 27, 2020): 54–60. Accessed April 27, 2024. https://riset.unisma.ac.id/index.php/JASE/article/view/9093.