“Water Quality Analysis During Tidal Conditions Using the Pollution Index Method in the Karang Mumus River, East Kalimantan”. 2025. Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) 4 (1): 57-63. https://doi.org/10.30872/jipt.v4i1.1166.