Miracle Cristia Meyfi Bambulu et al. 2024. Assessment of Antioxidant Activity of Ethanol Extract from Callyspongia arizusa Obtained from Parentek Beach, Minahasa Regency. PHARMACON. 13, 3 (Oct. 2024), 738–744. DOI:https://doi.org/10.35799/pha.13.2024.55265.