Siregar, S. H., D. . Nurhaliza, and A. R. . Ramadhanti. “Bentonite-Chitosan Bionanocomposite for Adsorption of Used Lubricant Oil: Bentonit-Kitosan”. Acta Chimica Asiana, vol. 8, no. 1, May 2025, pp. 548-54, doi:10.29303/aca.v8i1.220.