Zuraida, Z., Sulistiyani, S., Sajuthi, D., & H. Suparto, I. (2017). Flavonoids Analysis Using HPLC of Ethanol and Chloroform Fractions of Alstonia Scholaris (R. Br) Bark and Their Antioxidant Potency. International Journal of Sciences: Basic and Applied Research (IJSBAR), 36(4), 16–27. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8082