Manres Nababan, Dian G. Purba, Stepan H Purba, Rafael Siregar, Muhammad Fauzi, Roni Agung Hasibuan, Rizki Sahertian, et al. “Pengendalian Limbah Cair Dan Dampak Pengaruh Limbah PT. Pabrik Es Siantar ”. Jurnal Mahasiswa Kreatif 2, no. 4 (June 10, 2024): 48–59. Accessed October 7, 2024. https://ifrelresearch.org/index.php/jmk-widyakarya/article/view/3458.