Boren, Prima Novia, and Bustari Badal, “Pengaruh Pemberian Pupuk Kotoran Walet Terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis Gueneensis Jacq) di Pre Nursery”, JRIP, vol. 4, no. 1, pp. 1–10, Feb. 2024, doi: 10.31933/xk7evy14.