Top-selling gaming consoles in the UK 2011-2018 | Statista
PS4 2018 sales bring lifetime total to over 90 million units - GameRevolution
PlayStation Sales Generated $21 Billion in Revenue During 2018's Fiscal Year
PS4 Was The Best Selling Console of 2018 At 18M Sold Compared To 17.5M Shipped For Nintendo Switch
PS4 vs Xbox One vs Switch USA Lifetime Sales – April 2018
FY2018 PlayStation 4 sales down as Sony gears up for next console | TechSpot
PS4 2018 sales bring lifetime total to over 90 million units - GameRevolution
Sony PlayStation unit sales by console 2021 | Statista
Switch vs PS4 vs Xbox One Global Lifetime Sales – May 2018
PlayStation 4 Sales Flatten, As Sony Predicts Slow Decline - Variety
Switch vs PS4 vs Xbox One Global Lifetime Sales – October 2018
Switch vs PS4 vs Xbox One Global Lifetime Sales – November 2018 | N4G
PS4 Was the World's Best-Selling Console in 2018 | Push Square
Revolución en el mercado: Sony sube el precio de la Play 5 | Noticias La Tribuna de Ciudad Real
PS4, XB1 and Switch sales breakdown by region (estimate until end of 2018) | ResetEra
Sony PlayStation unit sales by console 2021 | Statista
Global PS4 console unit sales 2021 | Statista
PS4 UK Sales Cross 1 Million in 2018
Xbox One vs PS4 vs Switch: Console and Game Sales Numbers | Hooked On Tech
PS4 vs Xbox One vs Switch USA Lifetime Sales – April 2018
PS5 supera el millón de unidades vendidas en Japón: la consola de Sony mejora los registros de PS4 en su lanzamiento en el país nipón
Global PS4 console unit sales 2021 | Statista
God of War breaks yet another PlayStation sales record as PS4 sales hit cresecendo - NotebookCheck.net News
Switch vs PS4 vs Xbox One Global Lifetime Sales – December 2018
God of War Sales Have Passed 10 Million - IGN
PS4 vs PS3 and Xbox 360 – VGChartz Gap Charts – January 2018 Update
