Johnson، Liane B.؛ Comeau، Michel؛ Clarke، Kevin D. (2001). "Hyperacusis in Williams Syndrome". The Journal of Otolaryngology. ج. 30 ع. 2: 90–2. DOI:10.2310/7070.2001.20811. PMID:11770962.
medlineplus.gov
Reference, Genetics Home (Dec 2014). "Williams syndrome". Genetics Home Reference (بالإنجليزية). Archived from the original on 2017-01-20. Retrieved 2017-01-22.
nih.gov
pubmed.ncbi.nlm.nih.gov
Johnson، Liane B.؛ Comeau، Michel؛ Clarke، Kevin D. (2001). "Hyperacusis in Williams Syndrome". The Journal of Otolaryngology. ج. 30 ع. 2: 90–2. DOI:10.2310/7070.2001.20811. PMID:11770962.
Reference, Genetics Home (Dec 2014). "Williams syndrome". Genetics Home Reference (بالإنجليزية). Archived from the original on 2017-01-20. Retrieved 2017-01-22.