The metabolic Basis of Inherited Disease (5 ed.). New York. pp. 474–497.{{cite book}}: CS1 maint: multiple names: editors list (link) ↑ Scharinger, Marwa; Kuntz, Marcel; Scharinger, Andreas; Teipel, Jan; Kuballa, Thomas; Walch, Stephan G.; Lachenmeier, Dirk W. (2021-03-03). "Rapid Approach to Determine Propionic and Sorbic Acid Contents in Bread and Bakery Products Using 1H NMR Spectroscopy".