“Optimasi Dosis Pupuk Nitrogen Dan Fosfor Pada Bibit Kelapa Sawit (Elaeis Guineensis Jacq. ) Di Pembibitan Utama”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 42, no. 3 (March 13, 2015). Accessed December 25, 2025. https://journal.ipb.ac.id/jurnalagronomi/article/view/9178.