Nadjamuddin, M. et al. 2023. Test the Antioxidant Effectiveness of Oyster Mushroom (Pleurotus ostreatus) Ethyl Acetate Fraction Cream Formula using FRAP (Ferric Reducing Antioxidant Power) and ABTS (2,2’-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) Methods). Jurnal Penelitian Pendidikan IPA. 9, 12 (Dec. 2023), 10985–10990. DOI:https://doi.org/10.29303/jppipa.v9i12.6118.