Soemarjono, Eko. “Strategi Pengembangan Kopi Robusta Rakyat Di Kabupaten Bondowoso”. FORAGRI : Jurnal Ilmu Pertanian 1, no. 1 (April 29, 2021): 37–49. Accessed February 15, 2026. https://journal.unibo.ac.id/index.php/foragri/article/view/17.