Fitriani, Aulia. “Making Purple Sweet Potato Tape Flour (Ipoema Batatas var.Ayamurasaki): A Study Of FermentationTime and Yeast Concentration”. Journal of Tropical Food and Agroindustrial Technology 1, no. 02 (August 10, 2021): 22-29. Accessed May 19, 2024. https://jtfat.umsida.ac.id/index.php/jtfat/article/view/1555.