"Sigourney Plans Shock Comeback" . OK! Magazine . 2008-06-28 . http://ok.co.uk/celebnews/view/1554/Sigourney-plans-shock-comeback-/ . Retrieved 2008-09-05 .   ^ Fleming, Michael (2009-07-30). "'Alien' Prequel Takes Off" . Variety . http://www.variety.com/article/VR1118006722.html?categoryid=13&cs=1&ref=bd_film . Retrieved 2009-08-03 .   ^ Abrams, Rachel (14 Jan 2011). "Rapace boards Ridley Scott's Prometheus " . Variety.com . http://www.variety.com/article/VR1118030307 . Retrieved