R. Prassetio, M. A. . Assydiqy, C. D. Kusmindari, Y. Pasmawati, and M. Gunarto , Trans., “Filtering Swamp Water into Clean Water Using Carbon Charcoal and Silica Sand Filter Media”, int.jour.sci.res.mana, vol. 12, no. 02, pp. 1018–1027, Feb. 2024, doi: 10.18535/ijsrm/v12i02.ec01.