Citri Priyono, T. S., E. Yuliani, and R. W. Sayekti. “Studi Penentuan Status Mutu Air Di Sungai Surabaya Untuk Keperluan Bahan Baku Air Minum”. Jurnal Teknik Pengairan: Journal of Water Resources Engineering, vol. 4, no. 1, Dec. 2013, pp. pp.53-60, https://jurnalpengairan.ub.ac.id/index.php/jtp/article/view/181.