Abidjulu, Jemmy. “ANALISIS KUALITAS AIR SUNGAI TANOYAN DI KOTA KOTAMOBAGU PROVINSI SULAWESI UTARA”. CHEMISTRY PROGRESS 1, no. 2 (December 13, 2019). Accessed April 26, 2024. https://ejournal.unsrat.ac.id/v3/index.php/chemprog/article/view/4960.