Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.
„National Nutrient Database”. Nutrient Data Laboratory of the US Agricultural Research Service. Arhivirano iz originala na datum 2015-03-03. Pristupljeno 07. 03. 2007.
„National Nutrient Database”. Nutrient Data Laboratory of the US Agricultural Research Service. Arhivirano iz originala na datum 2015-03-03. Pristupljeno 07. 03. 2007.