Pamungkas, Bagus Fajar, et al. “Characterization of the Acid- and Pepsin-Soluble Collagens from Haruan (Channa Striatus) Scales”. Pakistan Journal of Nutrition, vol. 18, no. 4, Mar. 2019, pp. 324–332, https://doi.org/10.3923/pjn.2019.324.332.