Herawati, E. et al. 2023. Characterization of Collagen Hydrolysate Gel from Mackerel Scad Skin (Decapterus macarellus). Jurnal Penelitian Pendidikan IPA. 9, 7 (Jul. 2023), 5568–5573. DOI:https://doi.org/10.29303/jppipa.v9i7.3983.