Selviani, S. ., and R. Azara. “The Effect of Age Of Cassava Tapai (Manihot Esculenta) and Concentration on The Characteristics of Cassava Tapai Flour : Pengaruh Umur Tape Singkong (Manihot Esculenta) Dan Konsentrasi Ragi Terhadap Karakteristik Tepung Tape Singkong”. Journal of Tropical Food and Agroindustrial Technology, vol. 1, no. 02, Aug. 2021, pp. 30-37, doi:10.21070/jtfat.v1i02.1571.