ADRIANTO, Mario Dwi.
 Analisis Produksi Biogas Berdasarkan Bahan Baku Limbah Kotoran Sapi, Serbuk Gergaji, dan Effective Microorganisme-4 (EM4).
<strong>Jurnal BETA (Biosistem dan Teknik Pertanian)</strong>, [S.l.], v. 7, n. 2, p. 297-301, aug. 2019.
ISSN 2502-3012.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/beta/article/view/51487" target="_new">https://ojs.unud.ac.id/index.php/beta/article/view/51487</a>&gt;. Date accessed: 08 may 2024.
doi: <a href="https://doi.org/10.24843/JBETA.2019.v07.i02.p10">https://doi.org/10.24843/JBETA.2019.v07.i02.p10</a>.