Aldo Saputra et al. 2026. Respon Pertumbuhan Bibit Kelapa Sawit di Main Nursery Akibat Pemberian Urea dan POC Urine Sapi. Jurnal Research Ilmu Pertanian. 6, 1 (Feb. 2026), 1–9. DOI:https://doi.org/10.31933/3py6r974.