Utami, Nyimas Ulfatry, Muhammad Said, Muhammad Faizal, and Leily Nurul Komariah. “Conversion of Palm Oil Mill Effluent on Biogas Production With Consortium Bacteria”. International Journal on Advanced Science, Engineering and Information Technology 9, no. 6 (December 29, 2019): 2035–2041. Accessed June 2, 2024. http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/10461.