Leonard David, China Details Ambitious Space Station Goals, su space.com, 7 marzo 2011. URL consultato il 9 marzo 2011.
«China is ready to carry out a multiphase construction program that leads to a large space station around 2020. As a prelude to building that facility, China is set to loft the Tiangong-1 module this year as a platform to help master key rendezvous and docking technologies.»