Williams, Dr. David R. Uranian Satellite Fact Sheet. NASA (National Space Science Data Center). 23 November 2007 [12 December 2008]. (原始内容存档于2010-01-18).
Williams, Dr. David R. Uranian Satellite Fact Sheet. NASA (National Space Science Data Center). 23 November 2007 [12 December 2008]. (原始内容存档于2010-01-18).