«NASA clears commercial crew contractors to resume work». Spaceflight Now, 09-10-2014 [Consulta: 10 octubre 2014]. «a highly-modified second-generation Dragon capsule fitted with myriad upgrades and changes – including new rocket thrusters, computers, a different outer mold line, and redesigned solar arrays – from the company's Dragon cargo delivery vehicle already flying to the space station.»
Shotwell, Gwynne. «Broadcast 2212: Special Edition, interview with Gwynne Shotwell» (mp3). The Space Show, 21-03-2014. Arxivat de l'original el 2014-03-22. [Consulta: 18 juliol 2017]. «We call it v2 for Dragon. That is the primary vehicle for crew, and we will retrofit it back to cargo.»
Shotwell, Gwynne. «Broadcast 2212: Special Edition, interview with Gwynne Shotwell» (mp3). The Space Show, 21-03-2014. Arxivat de l'original el 2014-03-22. [Consulta: 18 juliol 2017]. «We call it v2 for Dragon. That is the primary vehicle for crew, and we will retrofit it back to cargo.»