Phenylketonuria (Mayo Clinic) : Discusses causes, types, symptoms, and treatment for PKU.

PKU Primer for Adolescents and Adults (New England Consortium of Metabolic Programs) : Read this article to better understand the disorder. Includes what it's like to live with the disease, dietary guidelines, causes, and treatment. 

PKU (Phenylketonuria) (UXL Science, 2008) : Encyclopedia entry briefly discussing the disorder, including a short history and statistics of PKU.

Phenylketonuria : An overview of the disorder, including statistics and treatment information.

“PKU FAQs: Frequently Asked Questions.” YouTube, PKU, 19 Dec. 2017, www.youtube.com/watch?v=BDXHn7fFVeo.