DeviH. L. N. A., SuptijahP. and NurilmalaM. (2017) “Effectiveness of Alkali and Acid to Produce Collagen from Fish Skin of Striped Catifish”, Jurnal Pengolahan Hasil Perikanan Indonesia. Bogor, ID, 20(2), pp. 255-265. doi: 10.17844/jphpi.v20i2.17906.