Prism break: With her latest album, Katy Perry is taking on a new sound and doing some soul-searching while staying at the top of the charts | National Post
Katy Perry - Prism Framed poster | Buy at Europosters
Katy Perry's Prism too seedy by half for Australian officials | Katy Perry | The Guardian
Katy Perry's Team on 'PRISM' Roll-Out | Billboard – Billboard
Katy Perry's 'PRISM': The Billboard Cover Story – Billboard