USA-193
1 2 BBC: US spy satellite plan 'a cover'
↑ Chivers, Tom (2008年2月21日). “Out-of-control satellite destroyed over Pacific”. London: Telegraph. http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2008/02/21/wsatellite121.xml 2011年2月28日閲覧。
↑ “US spy satellite plan 'a cover'”. BBC News. (2008年2月17日). http://news.bbc.co.uk/2/hi/americas/7248995.stm
↑ New York Times: Satellite Spotters Glimpse Secrets, and Tell Them
↑ James Oberg (2008年8月25日). “Assessing the hazards of space hydrazine, and the media reportage of it”. The Space Review. http://www.thespacereview.com/article/1195/1 A shorter version of this article was published as James Oberg (First Published August 2008). “U.S. Satellite Shootdown: The Inside Story”.