3Manyika James, Chui Michael, Brown Brad, et al. Big data: The next frontier for innovation, competition, and productivity. McKinsey Glob- al Institute. (2011-05 ) . http: //www. mekinsey, com/insights/mgi/research/technology_ and_ innovation/big_ data the_ next_ fron- tier for innovation.
4Lohr Steve. The Age of Big Data. US: New York Times. (2012 -02 - 11 ) . http: //www. nytimes, com/2012/02/12/sunday - review/big - datas - impact - in - the - world html? pagewanted = all&_ r = 0.
5Gray J. , Chambers L. Bounegru L. The Data Journalism Handbook. US: O' Reilly Media. 2012.
6Ed Pilkington Amanda Michel Obama' s team of tech gurus to unleash ' Holy Grail' of digital campaigning. UK: Guardian. (2012 -05 - 14) . http: //www. guardian, co. uk/world/2012/may/14/obama- digital -campaigning- dashboard.
7Sedghi Ami. Battle of the US election maps. UK: Guardian. ( 2012 - 11 - 07 ) . http : //www. guardian, co. uk/news/datablog/gallery/2012/ nov/07/battle - us - election - maps.
8Rogers Simon. US poverty: where are the super poor? . UK : Guardian. ( 2011 - 11 - 03 ) . http : //www. guardian, co. uk/news/datablog/ 2011/nov/03/us - poverty - poorest.
9Hannah Waldram Katie Rogers, Laura Oliver, Simon Rogers. Barack Obama wins re -election: mapping global reactions. UK: Guardian. (2012 - 11 -07 ) . http: //www. guardian, co. uk/news/datablog/interactive/2012/nov/07/barack - obama - re - election - global - reac- tions - map.