Riniarti, Dewi, Any Kusumastuti, and Bambang Utoyo. “Pengaruh Bahan Organik, Pupuk P, Dan Bakteri Pelarut Phosfat Terhadap Keragaan Tanaman Kelapa Sawit Pada Ultisol”. Jurnal Penelitian Pertanian Terapan 12, no. 3 (July 24, 2017). Accessed April 16, 2024. https://jurnal.polinela.ac.id/jppt/article/view/216.