Oping, Joy Marysca. “DAYA SAING KOMODITI UNGULAN SEKTOR PERKEBUNAN DI SULAWESI UTARA”. Jurnal AGROBISNIS 1, no. 1 (April 18, 2021): 32–47. Accessed November 18, 2025. https://agrobisnis.faperta-ukit.ac.id/index.php/agrobisnis/article/view/20.