A. Nurjannah, D. Darmanto, and I. Wijayanti, “Optimization Making Glucosamine Hydrochloride (HCl GlcN) of Crab Shell Waste through Chemical Hydrolysis”, JPHPI, vol. 19, no. 1, pp. 26–35, Apr. 2016, doi: 10.17844/jphpi.v19i1.11689.