"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JGT2-D4X : accessed 12 Feb 2013), Johneric Holmes, 20 March 2010; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). نسخة محفوظة 2016-03-04 على موقع واي باك مشين.
"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JGT2-D4X : accessed 12 Feb 2013), Johneric Holmes, 20 March 2010; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). نسخة محفوظة 2016-03-04 على موقع واي باك مشين.