WulandariW., and SuptijahP. “Effectiveness of Alkaline Pretreatment and Acetic Acid Hydrolysis on the Characteristics of Collagen from Fish Skin of Snakehead”. Jurnal Pengolahan Hasil Perikanan Indonesia, Vol. 18, no. 3, Dec. 2015, doi:10.17844/jphpi.v18i3.11309.