Simamora, Philipus, Hutwan Syarifuddin, and Dodi Devitriano. “Estimasi Emisi Gas Metana (CH4) Dari Proses Pengomposan Feses Babi (Sus Scrofa Domesticus) Menggunakan Effective Microoganism-4 (EM4).”. Jurnal Pembangunan Berkelanjutan 6, no. 2 (January 6, 2024): 52 - 60. Accessed November 26, 2024. https://online-journal.unja.ac.id/JPB/article/view/29492.