“POTENSI BIOMASSA KULIT SINGKONG DAN LUMPUR IPAL SENTRA INDUSTRI KECIL SOMBER (SIKS) SEBAGAI BRIKET”. SPECTA Journal of Technology 9, no. 1 (April 25, 2025): 1–9. Diakses November 2, 2026. https://journal.itk.ac.id/index.php/sjt/article/view/1185.