LESTARI, AGATHA, & YOHANES DWIATMAKA. " Antioxidant Activity of Red Bettle Leaves Extract (Piper crocatum) as a Result of Optimization of Ethanol-Water Solvents." JURNAL ILMU KEFARMASIAN INDONESIA [Online], 12.1 (2014): 75-79. Web. 24 Nov. 2024