Awwaliah, Mardhatillah, et al. “Korelasi Kadar Fenol Dan Flavonoid Terhadap Indeks Aktivitas Antioksidan Ekstrak Batang Vernonia Amygdalina: Correlation of Phenol and Flavonoid Content With Antioxidant Activity Index of Vernonia Amygdalina Stem Extracts”. Jurnal Sains Dan Kesehatan, vol. 5, no. 5, Oct. 2023, pp. 652-8, doi:10.25026/jsk.v5i5.1959.