PlayStation 3 & 4 unit sales U.S. 2020 | Statista
Sony PS4 Poised to Pass PS3 Lifetime Sales, Switch Breaks 20 Million Units - ExtremeTech
Charts: The State of the Multi-Billion Dollar Console Gaming Market
Gamasutra - NPD: Behind the Numbers, December 2010
Worldwide Hardware Sales 2010 | TheSixthAxis
End of an era: Microsoft halts production of the Xbox 360 - ExtremeTech
Analysis: Xbox 360 Outsells PS3 At Higher Average Price In U.S.
U.S. video game hardware in 2012: Winners, losers and retirees
Analysis: Xbox 360 poised to pass Wii in US sales by year's end | Ars Technica
PS4 vs PS3 and Xbox 360 – VGChartz Gap Charts – November 2017 Update
Sony hides PlayStation 3 sales data as profits fall - GeekWire
PS3 sales to hit 13 million in FY09, says Sony | VG247
NPD: US game industry slips 16% in August, PS3 sales nearly double - GameSpot
NPD expects PS3 sales to jump 40-60% post-price cut | Engadget
NPD Seventh generation | Video Game Sales Wiki | Fandom
PS3 Sales Top Xbox 360 Thanks to GTA 5 | PCMag
PS4 sales hit 88 million, surpass PS3 | TweakTown
NPD 2008 sales figures | Video Game Sales Wiki | Fandom
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – May 2019 Update | N4G
NPD Seventh generation | Video Game Sales Wiki | Fandom
PS3 Sales At 87.4 Million As Of March 2017; Almost 1 Billion Units Of PS3 Software Sold
PlayStation 3: sales volume in Germany 2017 | Statista
PS3 sales increase tenfold since relaunch | Games | The Guardian
Year-over-year PS3 sales drop bad news for Sony | Ars Technica
