Widiyanto, Uju, Sitti Hardiyanti Rachman, and Mala Nurilmala, “Preliminarily Study on Hydroxyproline Content of Purple-spotted Bigeye (Priacanthus tayenus) Scaly Skin and Its Gelatine Quality”, tlsr, vol. 36, no. 1, pp. 93–110, Mar. 2025, doi: 10.21315/tlsr2025.36.1.6.