Elida Novita, Arthanti Yulia Admaja, dan PradanaHendra Andiananta. “Mass and Contact Time of Activated Carbon Treatment to Adsorption Efficiency for Coffee Processing Wastewater”. Jurnal Keteknikan Pertanian 9, no. 2 (Agustus 30, 2021): 49-56. Diakses September 1, 2024. https://jurnal.ipb.ac.id/index.php/jtep/article/view/32218.