“Pemanfaatan Limbah Mikroorganisme Anaerob Proses Biogas Menjadi Pupuk Organik Padat”. Jurnal Serambi Engineering 9, no. 4 (September 26, 2024). Accessed April 18, 2025. https://jse.serambimekkah.id/index.php/jse/article/view/440.