Melinia, L. A., M. . Naibaho, E. Puspita, R. Ramlan, and M. . Ginting. “REVIEW OF ADSORPTION OF HEAVY METALS BY ADSORBENT MnFe2O4 – ZEOLITE IN WATER”. Indonesian Physical Review, vol. 6, no. 2, May 2023, pp. 196-19, doi:10.29303/ipr.v6i2.215.