Fitriani, Aulia. “Making Purple Sweet Potato Tape Flour (Ipoema Batatas var.Ayamurasaki): A Study Of FermentationTime and Yeast Concentration: Pembuatan Tepung Tape Ubi Jalar Ungu (Ipomoea Batatas Var. Ayamurasaki) : Kajian Lama Fermentasi Dan Konsentrasi Ragi”. Journal of Tropical Food and Agroindustrial Technology 1, no. 02 (August 10, 2021): 22–29. Accessed April 26, 2025. https://jtfat.umsida.ac.id/index.php/jtfat/article/view/1555.