Andirwana, et al. “The Comparison of the Microbiological Quality of RO and Mineral Refill Drinking Water Based on Presumptive Detection of Escherichia Coli”. Jurnal Bioedukasi, vol. 9, no. 2, Oct. 2026, pp. 959-66, https://ejournal.unkhair.ac.id/index.php/bioedu/article/view/12857.