Warsono, Harish Reza Septiano, Winarto Kurniawan, and Hirofumi Hinode. 2018. “Utilization of Modified Indonesia Natural Bentonite for Dye Removal”. ASEAN Journal of Chemical Engineering 18 (2), 13-21. https://dev.journal.ugm.ac.id/v3/AJChE/article/view/9020.