Romansyah, Erni. “Pemodelan Matematis Kimia Tanah Dan Pengaruhnya Terhadap Pertumbuhan Tanaman Padi Metode SRI (System of Rice Intensification)”. Jurnal Ilmiah Teknologi Pertanian Agrotechno 3, no. 2 (February 6, 2019): 342–347. Accessed January 22, 2026. https://ejournal1.unud.ac.id/index.php/agrotechno/article/view/3839.