A. Hartono, D. Nadalia, and M. R. F. Sulistiono, “Determination of the Critical Limit of Phosphorus for Shallot Growth in Brebes Regency, Central Java”, J. Il. Tan. Lingk., vol. 26, no. 1, pp. 40–47, Apr. 2024, doi: 10.29244/jitl.26.1.40-47.