SITORUS, Y. R.; MARDINA, V. Karakteristik Kimia dari Penggolahan Limbah Cair PTPN Y, Sumatera Utara. Jurnal EnviScience (Environment Science), [S. l.], v. 4, n. 2, p. 58–66, 2020. DOI: 10.30736/4ijev.v4iss2.197. Disponível em: https://jurnalkesehatan.unisla.ac.id/index.php/jev/article/view/197. Acesso em: 6 may. 2024.