PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – March 2020
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – July 2019 Update | N4G
Xbox One, PlayStation 4 outpacing Xbox 360, PlayStation 3 sales
Microsoft Xbox One: How to save it
PS4 vs Switch vs Xbox Sales as of November 2017 | The Nerd Stash
Global Xbox gaming consoles unit sales 2021 | Statista
Microsoft: Xbox One Sales Double After Dropping Kinect | PCMag
Xbox One vs Xbox 360 – VGChartz Gap Charts – October 2018 Update
NPD Seventh generation | Video Game Sales Wiki | Fandom
One year after launch, Sony's PS4 is crushing Microsoft's Xbox One – GeekWire
Xbox One - Wikipedia
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – June 2018 Update | N4G
Xbox One vs Xbox 360 in the US – VGChartz Gap Charts – January 2019 Update
Xbox One beats PlayStation 4 on Black Friday, according to market-research firm | VentureBeat
Xbox One vs Xbox 360 – VGChartz Gap Charts – October 2018 Update
Xbox 360 Maintains Lead in U.S. Console Market in January, Ends 2011 as No. 1 Console Worldwide - The Official Microsoft Blog
PS4 and Xbox One vs PS3 and Xbox 360 Sales Comparison - November 2021
Xbox One vs Xbox 360 – VGChartz Gap Charts – October 2017 Update
PS4 and Xbox One vs PS3 and Xbox 360 - Aligned Sales Comparison - November 2015 Update
Xbox One Sold 39.1M Units and PlayStation 4 Sold 76.6M Units by March 2018, Says IHS Markit Research
Xbox 360 vs Xbox One - Difference and Comparison | Diffen
Xbox One leads US software game sales in January, nearly 740 million hours of fun since launch - The Official Microsoft Blog
April NPD: PS4 Outsells Xbox One for the Fourth Month in a Row | Time
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – May 2019 Update | N4G
What Sony's '4.2 Million PS4s Sold' Figure Actually Means - IGN
