U. Sudadi, L. M. A. H. Ramadhan, B. Nugroho, and A. Hartono, “Dynamics of Phosphorus Fractions and Chemical Properties of Paddy Soils as related to Paddy Rice Cropping Index and Irrigation Practices: Dinamika Fraksi Fosfor dan Sifat Kimia Tanah Sawah Terkait Indeks Pertanaman Padi Sawah dan Praktik Pengairan”, J. Il. Tan. Lingk., vol. 19, no. 1, pp. 19–25, Mar. 2019, doi: 10.29244/jitl.19.1.19-25.