Tustiyani, Isna. “Pengaruh Pemberian Berbagai Zat Pengatur Tumbuh Alami Terhadap Pertumbuhan Stek Kopi”. Jurnal Pertanian 8, no. 1 (April 14, 2017): 46–50. Accessed June 8, 2026. http://103.127.96.46/index.php/jp/article/view/565.