Rahman, A. A., F. Fadlil, H. Tuheteru, and S. Halijah. “Innovation and Characterization of Zeolite from Matoa Fruit for Adsorption of Heavy Metals Cu(II)”. Jurnal Teknik Kimia Dan Lingkungan, vol. 9, no. 2, Oct. 2025, pp. 74-80, doi:10.33795/jtkl.v9i2.7390.