Ratri, Lufiana Puspita, and Windi Wulandari. “KEBERADAAN COLIFORM PADA DEPO AIR MINUM ISI ULANG DI GAMBIRSARI SURAKARTA”. Prosiding University Research Colloquium, Jan. 2019, pp. 66-71, https://repository.urecol.org/index.php/proceeding/article/view/300.