United Launch Alliance
Viited
- ↑ United Launch Alliance (www.ulalaunch.com). Quick facts. Vaadatud 15.10.2014
- ↑ Justin Ray (23. november 2009). "Atlas 5 launches Intelsat communications satellite". Spaceflight Now. Originaali arhiivikoopia seisuga 16.10.2014. Vaadatud 16.10.2014.