2020-02-15 [2020-02-16]. (原始内容存档 (PDF)于2020-02-15). Coronavirusin N.Y.: Manhattan Woman Is First Confirmed Case in State. 纽约时报. 2020-03-01 [2020-03-01]
(原始内容存档于2020-06-10). Bluestein, Greg. Georgia delays presidential primary due to coronaviruspandemic. The Atlanta Journal-Constitution. March 14, 2020 [March
(原始内容存档于2021-01-15). Hero's welcome for Biden in Kosovo. Sina Corp. 2009-05-05 [2020-11-12]. (原始内容存档于2020-11-17). Hall of Fame. Delaware Volunteer Firemen's Association
Patricia. Delaware history is made: The First State gets its first president in Joe Biden. Delaware Online. 2020-11-07 [2020-11-08]. (原始内容存档于2020-11-08)