PS4 sales officially pass 30 million | Ars Technica
June 2015 NPD: PlayStation 4 beats Xbox One as Batman tops the software chart | VentureBeat
The Witcher 3 PC vs PS4 vs Xbox One sale percentages revealed for 2015, 2016 and 2017
PS4 vs Xbox One vs Wii U Global Lifetime Sales – November 2015 Update
New Xbox One UI is faster than PS4 | MyGaming
The Witcher 3' Takes Top Spot on May PSN Sales Chart
PS4 2018 sales bring lifetime total to over 90 million units - GameRevolution
Witcher 3's Sales By System--How The Game Has Sold On PC, PS4, Xbox One, And Switch - GameSpot
PS4 vs Xbox One vs Wii U Global Lifetime Sales – April 2015 Update - PS4 22.4M, Xbox One 12.5M, Wii U 9.6M
PS4 Will Outsell Xbox One by 23 Million Units Through 2018 says Report | Attack of the Fanboy
PS4 sales officially pass 30 million | Ars Technica
April 2015 NPD: Xbox One outsells PS4; Mortal Kombat X tops software chart | VentureBeat
UK Sales Charts: Uncharted PS4 Nabs the 8th Biggest PS4 Launch of 2015 - Push Square
PS4 vs Xbox One vs Wii U Global Lifetime Sales – April 2015 Update - PS4 22.4M, Xbox One 12.5M, Wii U 9.6M
PS4 Tops Console Sales Charts in US June 2015 NPDs - GameSpot
PS4's sales dominance slackens slightly in holiday season | Ars Technica
PS4 Reclaimed Top Hardware Sales Spot in January 2015 - The Escapist
PS4 vs Xbox One vs Wii U Global Lifetime Sales – December 2015 Update
PS4 sales officially pass 30 million | Ars Technica
Top 10 Best-Selling PS4 Games on PSN Revealed for October 2015 - GameSpot
PS4 vs Xbox One vs Wii U Global Lifetime Sales – November 2015 Update
Top 10 Best-Selling PS4 Games on PSN Revealed for October 2015 - GameSpot
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
List of best-selling PlayStation 4 video games - Wikipedia
