“Bioethanol Generation Through the Fermentation Process of Pineapple and Black Grape Utilizing Saccharomyces Cerevisiae and Saccharomyces Bayanus”. Nusantara Science and Technology Proceedings, vol. 2023, no. 36, Dec. 2023, pp. 52-60, https://doi.org/10.11594/nstp.2023.3609.