Wii, Xbox 360 and PS3 Console Sales Numbers Compared
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – July 2019 Update | N4G
NPD Seventh generation | Video Game Sales Wiki | Fandom
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
PS4 vs PS3 and Xbox 360 – VGChartz Gap Charts – November 2016 Update
The Divnich Tapes: PlayStation 3 Vs. Xbox 360 In The USA
N4G on Twitter: "PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts September 2018 Update The gap grew in favor of the combined sales PlayStation 3 and Xbox