Lumbanraja, J., C. P. Satgada, S. Sarno, M. Utomo, R. Hasibuan, D. Dermiyati, and S. Triyono. “Phosphorus (P) Adsorption Behavior and Harvested P by the Sugarcane (Saccharum Officinarum L.) Affected by Inorganic and Organic Fertilizer Applications on an Ultisol”. JOURNAL OF TROPICAL SOILS, vol. 23, no. 1, Mar. 2018, pp. 35-45, doi:10.5400/jts.2018.v23i1.35-45.