Umaningrum, Dewi, 		Nurmasari, Radna, 		Santoso, Uripto, 		Astuti, Maria, AND 		Pradita, Hapsari.
" Adsorption of Congo Red onto Humic Acid Isolated from Peat Soil Gambut Regency, South Kalimantan" <em>Molekul</em> [Online], Volume 18 Number 2 (10 July 2023)