Purba, R., G. S. Manalu, S. Patimah, and H. Pardi. “Utilization of Organic Waste into Environmentally Friendly Household Cleaning Agents: Eco-Enzyme”. Jurnal Perkotaan, vol. 16, no. 1, Aug. 2024, pp. 22-31, doi:10.25170/perkotaan.v16i1.5604.