Mahdalena, and Siti Mutmainah. “Pengaruh Pemberian Pupuk UREA Dan Pupuk Kotoran Sapi Terhadap Pertumbuhan Bibit Tanaman Kelapa Sawit (Elaeis Guineensis Jacq): Effect of UREA Fertilizer and Cow Manure on the Growth of Oil Palm Seeds (Elaeis Guneensis Jacq)”. Agrifarm: Jurnal Ilmu Pertanian, vol. 11, no. 2, Jan. 2023, pp. 107-10, doi:10.24903/ajip.v11i2.1873.