Syahputra, Gita, Hariyatun Hariyatun, Muhammad Firdaus, and Pugoh Santoso. “Extraction and Characterization of Collagen from Sand Sea Cucumber (Holothuria Scabra)”. Jurnal Ilmu Pertanian Indonesia 26, no. 3 (June 28, 2021): 319-327. Accessed December 4, 2021. https://ilkom.journal.ipb.ac.id/index.php/JIPI/article/view/30443.