Syamsuri, Yustia Wulandari Mirzayanti, and Sigit Setiawan. “Pengaruh Konsentrasi NaOH, Urea, Dan Rumen Terhadap Performa Generator Berbahan Bakar Biogas”. Journal of Research and Technology 7, no. 1 (June 30, 2021): 71–82. Accessed February 5, 2025. https://journal.unusida.ac.id/index.php/jrt/article/view/430.