BR SEMBIRING, L. K. .; SIPAYUNG, R.; IRSAL. Tanggap Pertumbuhan Bibit Kopi Robusta (Coffea Robusta L.) Terhadap Berbagai Media Tanam Dan Frekuensi Penyiraman. Jurnal Online Pertanian Tropik, [S. l.], v. 5, n. 1, 2019. DOI: 10.32734/jopt.v5i1.3150. Disponível em: https://idjpcr.usu.ac.id/jpt/article/view/3150. Acesso em: 4 aug. 2025.