Penentuan Status Mutu Kualitas Air Sungai Somber Hulu Menggunakan Metode Indeks Pencemaran. sjt [Internet]. 30 April 2026 [dikutip 2 November 2026];10(1):54-62. Tersedia pada: https://journal.itk.ac.id/index.php/sjt/article/view/8481934