Kualitas Mikrobiologi Air Sungai Batang Toru, Sumatera Utara Berdasarkan Bakteri Indikator Pencemaran (Total Coliform, Fecal Coliform, Dan Escherichia Coli. Natura: Journal of Multidisciplinary Science, [S. l.], v. 2, n. 1, p. 59–64, 2026. DOI: 10.22373/natura.005. Disponível em: https://publication.ar-raniry.ac.id/index.php/natura/article/view/274. Acesso em: 13 oct. 2026.