Fairuz, Adam. “EFFECT OF ADDITION COCONUT PULP AND BANANA PEEL ON PRODUCTION BIOGAS FROM COW MANURE”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 4, no. 2 (July 25, 2015). Accessed November 26, 2025. https://jurnal.fp.unila.ac.id/index.php/JTP/article/view/822.