"Archived copy"(PDF). www.gallaudet.edu. Archived from the original(PDF) on 6 December 2021. Retrieved 30 June 2022.{{cite web}}: CS1 maint: archived copy as title (link)
"Archived copy"(PDF). www.gallaudet.edu. Archived from the original(PDF) on 6 December 2021. Retrieved 30 June 2022.{{cite web}}: CS1 maint: archived copy as title (link)