Sindesi, O. A., B. Ncube, M. N. Lewu, A. R. Mulidzi, and F. B. Lewu. “Effects of Zeolite-Amended Sandy Soil on Moisture, Ash, and Protein Content of Swiss Chard”. Indonesian Journal of Agricultural Research, vol. 8, no. 2, July 2025, pp. 85-91, doi:10.32734/injar.v8i2.18592.