Inherited Metabolic Diseases of the Nervous System, The Phenylketonuria
Adams & Victors Principles of Neurology, Chp 37, pg 968, Ropper, A.H.,et al, 2014
Overview of Phenylketonuria
UptoDate (May), Bodamer,O.A., 2008
Phenylketonuria
eMedicine (December), Arnold,G.L., 2007