S. S. Umadi, S. Ilyas, and R. Widyastuti, “Characteristic and viability of nitrogen fixation bacteria and phosphate solubilizing bacteria in carrier media”, J. Il. Tan. Lingk., vol. 25, no. 2, pp. 40–45, Dec. 2023, doi: 10.29244/jitl.25.2.40-45.