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^ Fabian, Jordan (January 6, 2016). "Biden regrets not running for president 'every day'". The Hill. Archived from the original on January 2, 2017. Retrieved January 12, 2017.

^ Hingston, Sandy (October 23, 2021). "The Biden Administration Keeps Tapping Penn People for Major Roles: D.C.'s gain is Philly's loss". Philadelphia. Retrieved March 5, 2022.

^ Tamari, Jonathan (July 12, 2019). "Penn has paid Joe Biden more than $900K since he left the White House. What did he do to earn the money?". Philadelphia Inquirer. Retrieved February 22, 2023.

^ Kane, Paul (June 11, 2018). "Biden wraps up book tour amid persistent questions about the next chapter". The Washington Post. ISSN 0190-8286. Archived from the original on November 7, 2020. Retrieved November 10, 2020.

^ Eder, Steve; Glueck, Katie (July 9, 2019). "Joe Biden's Tax Returns Show More Than $15 Million in Income After 2016". The New York Times. Archived from the original on July 15, 2019. Retrieved July 16, 2019.

