Joko, Tri, Dyah Agustin Catur Putri, and Hanan Lanang Dangiran. “Chitosan on Reducing Chemical Oxygen Demands in Laundry Waste Water”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 30, no. 1 (September 30, 2016): 104–111. Accessed January 19, 2026. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/6399.