Zaenal Arifin, Aang, and Mohammad Zaedan Fitri. “Pengaruh Konsentrasi Urin Sapi Pada Stek Kopi Robusta BP 308 Dan BP 358 (Coffea Robusta)”. JURNAL AGROPLANT 4, no. 2 (July 28, 2021): 29–36. Accessed November 22, 2024. https://ejurnal.uij.ac.id/index.php/AGR/article/view/1168.