E. K. Putri, S. Suwardi, and U. Sudadi, “Amelioration of Potassium Humate as Ligand Exchanger for Adsorbed P Fractions and their Relationships with Chemical Properties of an Indonesian Andisol”, JPSL, vol. 14, no. 4, p. 875, Nov. 2024, doi: 10.29244/jpsl.14.4.875.