June 2015 NPD: PlayStation 4 beats Xbox One as Batman tops the software chart | VentureBeat
UK Sales Charts: Uncharted PS4 Nabs the 8th Biggest PS4 Launch of 2015 - Push Square
Top 10 Best-Selling PS4 Games on PSN Revealed for October 2015 - GameSpot
New Xbox One UI is faster than PS4 | MyGaming
PS4 Officially Marches Past 30 Million Units Sold
PS4 vs Xbox One vs Wii U Global Lifetime Sales – April 2015 Update - PS4 22.4M, Xbox One 12.5M, Wii U 9.6M
Sony PS4 tops Microsoft Xbox One in U.S. console sales for 5th straight month – GeekWire
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
PS4's sales dominance slackens slightly in holiday season | Ars Technica
The Witcher 3' Takes Top Spot on May PSN Sales Chart
April 2015 NPD: Xbox One outsells PS4; Mortal Kombat X tops software chart | VentureBeat
PS4 Will Outsell Xbox One by 23 Million Units Through 2018 says Report | Attack of the Fanboy
May 2015 NPD: PS4 Tops Console Sales Charts, The Witcher 3 Leads Software Sales - Game Informer
PS4 Tops Console Sales Charts in US June 2015 NPDs - GameSpot
PS4 Tops Console Sales Charts in US July 2015 NPDs - GameSpot
PS4 Reclaimed Top Hardware Sales Spot in January 2015 - The Escapist
PS4 vs Xbox One vs Wii U Japan Lifetime Sales – December 2015 Update | N4G
PS4 vs Xbox One vs Wii U Global Lifetime Sales – November 2015 Update
Xbox One X: Microsoft Fights Back in Booming Console Market | Newzoo
2017 will be peak year for PS4 hardware sales- Ars Technica article suggests | Page 3 | ResetEra
PS4 sales officially pass 30 million | Ars Technica
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 vs Xbox One vs Wii U Europe Lifetime Sales – August 2015 Update | N4G
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
PS4 sales officially pass 30 million | Ars Technica
