↑Lenhoff, Howard M.; Teele, Rita L.; Clarkson, Patricia M.; Berdon, Walter E. (2010). "John C. P. Williams of Williams-Beuren syndrome". Pediatric Radiology. 41 (2): 267–9. doi:10.1007/s00247-010-1909-y. PMID21107555.
↑Dobbs, David (2007-07-08). "The Gregarious Brain". New York Times. Retrieved 2007-09-25. If a person suffers the small genetic accident that creates Williams syndrome, he’ll live with not only some fairly conventional cognitive deficits, like trouble with space and numbers, but also a strange set of traits that researchers call the Williams social phenotype or, less formally, the “Williams personality”: a love of company and conversation combined, often awkwardly, with a poor understanding of social dynamics and a lack of social inhibition
