Khaeriyah, A. et al. 2020. Utilisation Gold Snail Flour Fermented Papain Enzyme in Feed as Biofermentor to Increase Growth of Channa Striata. International Journal on Advanced Science, Engineering and Information Technology. 10, 5 (Oct. 2020), 2158–2163. DOI:https://doi.org/10.18517/ijaseit.10.5.11364.