Djailani, F. et al. 2016. Extraction Optimization and Characterization of Collagen from Yellow Pike Conger Swimbladder with Acid-Hydro-Exctraction Method. Jurnal Pengolahan Hasil Perikanan Indonesia. 19, 2 (Aug. 2016), 156–167. DOI:https://doi.org/10.17844/jphpi.v19i2.13461.