Dunar A.J., Waring S.P. (1999), Power To Explore—History of Marshall Space Flight Center 1960–1990, U.S. Government Printing Office, ISBN 0-16-058992-4 (Chapter 12, Hubble Space telescope: [1] (页面存档备份,存于互联网档案馆))
gsfc.nasa.gov
HUBBLE SPACE TELESCOPE STAND-IN GETS STARRING ROLE. September 21、2001. 存档副本. [2008-04-26]. (原始内容存档于2009-07-19).
Dunar A.J., Waring S.P. (1999), Power To Explore—History of Marshall Space Flight Center 1960–1990, U.S. Government Printing Office, ISBN 0-16-058992-4 (Chapter 12, Hubble Space telescope: [1] (页面存档备份,存于互联网档案馆))
HUBBLE SPACE TELESCOPE STAND-IN GETS STARRING ROLE. September 21、2001. 存档副本. [2008-04-26]. (原始内容存档于2009-07-19).
Co-Processor(PDF). NASA Facts. NASA. June 1993 [May 16, 2016]. NF-193. (原始内容存档(PDF)于July 23, 2012). 本文含有此來源中屬於公有领域的内容。