Pasaribu, E., Nurhayati, T. and Nurilmala, M. (2018) “Extraction and Characterization of Pepsin Enzyme from Tuna (Thunnus albacares) Gastric”, Jurnal Pengolahan Hasil Perikanan Indonesia, 21(3), pp. 486–496. doi:10.17844/jphpi.v21i3.24727.