PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – May 2019 Update | N4G
PS4 vs Xbox One in the US – VGChartz Gap Charts – April 2019 Update
Nintendo Switch growth continues as aging rivals Sony PS4 and Microsoft Xbox One stagnate – GeekWire
Xbox gaming consoles: unit sales UK 2011-2019 | Statista
Current-gen game console unit sales 2021 | Statista
PS4 hits insane sales milestone with Xbox One still far behind - Dexerto
Switch vs PS4 vs Xbox One Global Lifetime Sales – January 2019
Switch vs PS4 vs Xbox One Global Lifetime Sales – July 2019
Switch vs PS4 vs Xbox One Global Lifetime Sales - October 2020
Switch vs PS4 vs Xbox One Global Lifetime Sales – December 2019 | N4G
Sony Corp PS4 VS XBox One: A Console War In Charts - LearnBonds.com
Xbox One vs PS4 vs Switch: Console and Game Sales Numbers - 2020 | Hooked On Tech
ᐈ Switch vs PS4 vs Xbox One Global Sales – 2017-2018 • WePlay!
PS4 Vs Xbox One Sales - What Are The Figures? - PlayStation Universe
Xbox One vs PS4 vs Switch: Console and Game Sales Numbers - 2020 | Hooked On Tech
Global Xbox One annual unit sales 2021 | Statista
VGChartz - 'PS5 and Xbox Series X|S vs PS4 and Xbox One Sales Comparison - October 2021' This monthly series compares the combined aligned sales of the PlayStation 5 and Xbox Series
PS4 Grew Sales 24% in August, Maintained Lead Against Xbox, Switch and PC
Witcher 3's Sales By System--How The Game Has Sold On PC, PS4, Xbox One, And Switch - GameSpot
Switch vs PS4 vs Xbox One Global Lifetime Sales – December 2019
DFC Intelligence Forecasts Video Game Console Sales to Surpass 150 Million - DFC Intelligence
Report: UK online sales of Switch double, PS4 triple and Xbox quadruple during lockdown - GamingDeals.com
Switch vs PS4 vs Xbox One Global Lifetime Sales – August 2019
PS4 vs Xbox One in the US – VGChartz Gap Charts – September 2019
