"Archived copy"(PDF). www.yale.edu. Archived from the original(PDF) on 24 October 2012. Retrieved 20 July 2022.{{cite web}}: CS1 maint: archived copy as title (link)
"Archived copy"(PDF). www.yale.edu. Archived from the original(PDF) on 24 October 2012. Retrieved 20 July 2022.{{cite web}}: CS1 maint: archived copy as title (link)