Mahdalena, and Obet. 2023. “Uji Ekstrak Bawang Merah (Allium Cepa L.) Dan Beberapa Media Tanam Terhadap Keberhasilan Sambung Pucuk Bibit Kopi Robusta (Coffea Robusta L.): Test of Shallot Extract (Allium Cepa L.) and Several Planting Media on the Success of Shoot Grafting of Robusta Coffee Seedlings (Coffea Robusta L.)”. Agrifarm: Jurnal Ilmu Pertanian 12 (2):115-20. https://ojs.uwgms.ac.id/index.php/agrifarm/article/view/2553.