Astuti, R.D. et al. 2018. Porang flour with and without soaking of keji beling extract increased ureum level on toxicity test. Jurnal Gizi dan Dietetik Indonesia (Indonesian Journal of Nutrition and Dietetics). 5, 3 (Mar. 2018), 93–97. DOI:https://doi.org/10.21927/ijnd.2017.5(3).93-97.