Nurjanah, Nurjanah, et al. “Ekstraksi Kolagen Kulit Ikan Tuna Sirip Kuning (Thunnus Albacares) Menggunakan Enzim Pepsin Dan Papain: Collagen Extraction of Yellowfin Tuna (Thunnus Albacares) Skin Using Pepsin and Papain”. Jurnal Pengolahan Hasil Perikanan Indonesia, vol. 24, no. 2, Aug. 2021, pp. 174-87, https://doi.org/10.17844/jphpi.v24i2.35410.