Astuti, W., Bendiyasa, I. M., Wahyuni, E. T., & Prasetya, A. (2010). The Effect of Coal Fly Ash Crystallinity toward Methyl Violet Adsorption Capacity. ASEAN Journal of Chemical Engineering, 10(1), 8-13. Retrieved from https://dev.journal.ugm.ac.id/v3/AJChE/article/view/8061