Syukur, M., and A. D. Susanti. “Selektivitas Adsorpsi Sistem Biner Anionik (Au/Cr) Menggunakan Superparamagnetik Fe3O4/OA/SiO2-Diamino”. REPOSITORY STIFAR, May 2018, https://repository.stifar.ac.id/Repository/article/view/64.