Wahyuni, P. M., 		Suprihatin, I. E., AND 		Dewi, I G. A. K. S. P..
" Utilization of Coffee Residue Activated by H3PO4 as Biosorbent Remazol Yellow FG Dye" <em>Jurnal Kimia (Journal of Chemistry)</em> [Online], (31 January 2025)