“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”, J. Sains. Kes, vol. 5, no. 5, pp. 652–658, Nov. 2024, doi: 10.30872/jsk.v5i5.561.