. Retrieved 2011-08-19 .   ^ Anderson, John (2009-01-18). "Precious: Based on the Novel 'Push' by Sapphire Movie Review From The Sundance Film Festival" . Variety . Reed Business Information . http://www.timeout.com/film/reviews/87257/precious-based-on-the-novel-push-by-sapphire.html?cpage=2&ccat=11 . Retrieved 2011-08-19 .   ^ "Entertainment; Precious Film Takes Sundance Prize" . BBC News Online . 2009-09-20 .