Rope, Ranita. “Analisis Usaha Tani Pada Sistem Pertanian Alami Padi Ladang Di Kabupaten Halmahera Utara”. Agrikan Jurnal Agribisnis Perikanan 2, no. 1 (May 5, 2009): 10–18. Accessed April 15, 2026. https://www.journal.tyarlyta.com/index.php/agrikan/article/view/1093.