Girsang, Valentina, Julia Reveny, and Marline Nainggolan. “ISOLATION AND CHARACTERIZATION COLLAGEN OF PATIN FISH SKIN (Pangasius Sp.)”. Asian Journal of Pharmaceutical Research and Development 8, no. 1 (February 15, 2020): 47–51. Accessed May 4, 2024. https://ajprd.com/index.php/journal/article/view/661.