"Why is the 2013 Inaugural Ceremonies on January 21?"(PDF). The 57th Presidential Inaugural Ceremonies: Guide for producers and correspondents to the inaugural ceremonies and Capitol Hill events. Joint Congressional Committee on Inaugural Ceremonies. pp. 22–23. Archived(PDF) from the original on May 2, 2013. Retrieved August 12, 2013.
David A. Fahrenthold and Debbi Wilgoren (January 21, 2012). "Obama calls for greater equality for all". The Washington Post. Archived from the original on January 21, 2013. Retrieved January 22, 2013.
Milbank, Dana (January 22, 2013). "Preaching to the choir". The Washington Post. Archived from the original on November 5, 2016. Retrieved January 27, 2013.
"Why is the 2013 Inaugural Ceremonies on January 21?"(PDF). The 57th Presidential Inaugural Ceremonies: Guide for producers and correspondents to the inaugural ceremonies and Capitol Hill events. Joint Congressional Committee on Inaugural Ceremonies. pp. 22–23. Archived(PDF) from the original on May 2, 2013. Retrieved August 12, 2013.
David A. Fahrenthold and Debbi Wilgoren (January 21, 2012). "Obama calls for greater equality for all". The Washington Post. Archived from the original on January 21, 2013. Retrieved January 22, 2013.
Milbank, Dana (January 22, 2013). "Preaching to the choir". The Washington Post. Archived from the original on November 5, 2016. Retrieved January 27, 2013.