SANTI, G. C. .; RAHMAYANTI, M. . Effect of Solution pH to Indigosol Blue Adsorption on Humic Acid Isolated from Kalimantan Peat Oil. Proceeding International Conference on Science and Engineering, [S. l.], v. 2, p. 193–195, 2019. DOI: 10.14421/icse.v2.84. Disponível em: https://www.sunankalijaga.org/prosiding/index.php/icse/article/view/84. Acesso em: 30 jul. 2026.