WidodoHupudio Hutomo, and Sudradjat. “Peranan Pupuk Kalsium Pada Tanaman Kelapa Sawit (Elaeis Guineensis Jacq.) Belum Menghasilkan”. Buletin Agrohorti 4, no. 3 (December 8, 2016): 276-281. Accessed April 27, 2024. https://journal.ipb.ac.id/index.php/bulagron/article/view/14256.