Kadang, N. et al. 2025. Antioxidant Activity Assay of Fractionated Extracts of Red Alga Kappaphycus alvarezii (Doty) Doty, 1996. JURNAL PESISIR DAN LAUT TROPIS. 13, 2 (May 2025), 103–110. DOI:https://doi.org/10.35800/jplt.13.2.2025.61592.