Juliana, Riska, et al. “Models of Moisture Sorption Isotherm and The Estimation of Red Ginger Powder Shelf Life in Various Packaging Materials”. Jurnal Keteknikan Pertanian, vol. 8, no. 1, Aug. 2020, pp. 23-28, https://doi.org/10.19028/jtep.08.1.23-28.