Desrihastuti, Desrihastuti, et al. “Dampak Kemiringan Lahan Terhadap Kadar Hara Dan Produksi Kelapa Sawit”. Jurnal Agro Industri Perkebunan, vol. 12, no. 2, July 2024, pp. 59-70, doi:10.25181/jaip.v12i2.3454.