Sisca, Vivi. 2016. “PENENTUAN KUALITAS AIR MINUM ISI ULANG TERHADAP KANDUNGAN NITRAT, BESI, MANGAN, KEKERUHAN, Ph, BAKTERI E.Coli DAN COLIFORM”. Chempublish Journal 1 (2):21-31. https://mail.online-journal.unja.ac.id/chp/article/view/3310.