Enjelina, Weni, M. Syahnan Purba, and Zulya Erda. “The Factors Of Sanitary Hygiene Associated With The Bacteriological Quality Of Refill Water In Tanjungpinang”. Jurnal Kesehatan Masyarakat Andalas 11, no. 1 (September 1, 2017): 33–38. Accessed December 21, 2024. https://jurnal.fkm.unand.ac.id/index.php/jkma/article/view/217.