“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 ”, jtfat, vol. 1, no. 02, pp. 30–37, Aug. 2021, doi: 10.21070/jtfat.v1i02.1571.