Sofiyanti, N. et al. 2022. The Effect of Yeast, NPK and Fermentation Time in Bioethanol Fermentation from “Abacaxi” Pinapple Pericarp. Jurnal Biologi Tropis. 22, 4 (Nov. 2022), 1132–1138. DOI:https://doi.org/10.29303/jbt.v22i4.4312.