Kusumawati, N. (2017) “Product Standarization of Ginger (Zingiber officinale Rosc.) and Red Ginger (Zingiber officinale var. Rubrum) Simplicia through Washing Time, Slice Thickness and Raw Materials Drying Process Optimization”, International Journal on Advanced Science, Engineering and Information Technology, 7(1), pp. 15–21. doi: 10.18517/ijaseit.7.1.910.