RamadhainiRizki Fauziah, .Sudradjat, and Ade Wachjar. “Optimasi Dosis Pupuk Majemuk NPK Dan Kalsium Pada Bibit Kelapa Sawit (Elaeis Guineensis Jacq.) Di Pembibitan Utama”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 42, no. 1 (July 8, 2014). Accessed May 3, 2024. https://journal.ipb.ac.id/index.php/jurnalagronomi/article/view/8151.