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^ Jump up to: a b Johnson, Lyndon B. (April 28, 1961). "Memorandum for the President". Office of the Vice President (Memorandum). Boston: John F. Kennedy Presidential Library and Museum. Retrieved August 1, 2013.

^ Launius, Roger D. (July 1994). "Lyndon B. Johnson, Vice President, Memo for the President, 'Evaluation of Space Program,' 28 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History Number 3. Washington, D.C.: NASA. OCLC 31825096. Retrieved August 1, 2013. Key Apollo Source Documents.

^ Kennedy, John F. (1961). "Apollo Expeditions to the Moon: Chapter 2". history.nasa.gov. Retrieved February 26, 2012.

^ Kennedy, John F. (September 12, 1962). "President John F. Kennedy: The Space Effort". Rice University. Archived from the original on July 8, 2006.

^ Selverstone, Marc. "JFK and the Space Race". White House Tapes–Presidential Recordings Program, Miller Center of Public Affairs, University of Virginia. Archived from the original on March 5, 2012. Retrieved February 26, 2012.

^ Dallek 2003, p. 652–653.

^ Wikisource: John F. Kennedy's Address Before the 18th General Assembly of the United Nations

^ Dallek 2003, p. 654.

^ Russ. "26, 2009#P12844 Life in Legacy". Lifeinlegacy.com. 