Nabillah, Anisa, et al. “The Effectiveness of Coagulation-Flocculation and Filtration-Adsorption Combination Using Anionic Surfactant for COD Removal on Contaminated Well Water”. Jurnal Ilmiah Teknik Kimia, vol. 10, no. 2, July 2026, pp. 152-60, doi:10.32493/jitk.v10i2.61040.