Lestari, D., Y. Liandro, E. Ang, and M. P. Kresnowati. “Shelf-Life Evaluation of Packaged Fermented Cassava Flour”. Journal of Engineering and Technological Sciences, vol. 51, no. 1, Feb. 2019, pp. 64-82, doi:10.5614/j.eng.technol.sci.2019.51.1.5.