Presidential Commission on the SpaceShuttleChallenger Accident, Appendix F – Personal Observations on Reliability of Shuttle (页面存档备份,存于互联网档案馆) by R. P.
Biographies: Space Flight Participant. NASA/Lyndon B. Johnson Space Center. 2008-12-05 [2009-01-10]. (原始内容存档于2009-01-17). The Crew of the ChallengerShuttle Mission