Permanasari, Ayu Ratna, Arum Syamfitri, Devina Maharani, Sinta Setyaningrum, and Wahyu Wibisono. “The Comparison of Free Cell and Immobilization Cell Fermentation on Bioethanol Production from Sorghum Stem by SSF and SHF Method”. Jurnal Teknik Kimia dan Lingkungan 8, no. 2 (October 31, 2024): 116–126. Accessed November 4, 2026. https://jurnal.polinema.ac.id/index.php/jtkl/article/view/5755.