Elfiyani, Erminilda, et al. “PEMBUATAN DAN ANALISA USAHA MINUMAN SINBIOTIK DARI UBI JALAR KUNING (Ipomoea Batatas L.) | KAJIAN KONSENTRASI STARTER DAN LAMA FERMENTASI: Manufacture And Business Analysis Of Synbiotic Drink From Yellow Sweet Potato (Ipomoea Batatas L.) | Study Of Starter Concentration And Fermentation Time”. Journal of Industrial Engineering & Technology Innovation, vol. 1, no. 1, July 2023, pp. 43-53, doi:10.61105/jieti.v1i1.18.