Irdawati, I. et al. 2023. The Ability of the Thermophilic Bacteria Triculture Consortium from Mudiak Sapan Hot Springs to Produce Biofuel . Jurnal Penelitian Pendidikan IPA. 9, 4 (Apr. 2023), 2265–2270. DOI:https://doi.org/10.29303/jppipa.v9i4.3480.