Paranormal Activity 2 Movie Box Office: Prequel Is an Expected (Not a Sleeper) Hit
Box office report: 'Paranormal Activity 4' possesses top spot with $30.2 million | CNN
Paranormal Activity 2 spooks to top of box office | The Independent | The Independent
Paranormal Activity - Rotten Tomatoes
Paranormal Activity Continues With New iTunes Comic | WIRED
Paranormal Activity: The Ultimate Chills Collection Blu-ray Review | High Def Digest
Dome knowledge on Twitter: "Posted @DomeKnowledge "Paranormal Activity" only cost $15000 to make - the film earned $193 million worldwide at box office, making in the most profitable horror movie in history. . . #
Paranormal Activity: The Ghost Dimension - Box Office Mojo