“Pendapatan Dan Kerentanan Petani Kopi Robusta Di Sekitar Kawasan Taman Nasional Bukit Barisan Selatan”. Jurnal Agribisnis Indonesia 11, no. 2 (December 22, 2023): 220–235. Accessed January 10, 2026. https://journal.ipb.ac.id/jagbi/article/view/42545.