Ferdana, G., N. Nursyirwani, and B. Amin. “CONCENTRATION OF WATER POLLUTION INDICATORS BACTERIA IN SIRIH PADANG SUMATERA BARAT”. Asian Journal of Aquatic Sciences, Vol. 4, no. 1, Apr. 2021, pp. 44-53, doi:10.31258/ajoas.4.1.44-53.