F. Gunawan, P. Suptijah, and U. Uju, “Extraction and Characterization Gelatin of Skin Mackerel (Scomberomorus commersonii) From Province Bangka Belitung Island”, JPHPI, vol. 20, no. 3, pp. 568–581, Dec. 2017, doi: 10.17844/jphpi.v20i3.19814.