Johar OA. PENCEMARAN SUNGAI SIAK DI KOTA PEKANBARU DAN PENEGAKAN HUKUM PIDANA LINGKUNGAN. JISPO [Internet]. 2019 Oct. 4 [cited 2026 Mar. 11];9(2):489-501. Available from: https://journal.uinsgd.ac.id/index.php/jispo/article/view/6046