Sony announces PlayStation 4 Pro with 4K HDR gaming for $399 - The Verge
PlayStation - Wikipedia
PS4 Release Date Confirmed for November 15th
PS4 Release Date: November 15 Announced As the Big Day
Original (2013) PS4 | TechRadar
PS4 Pro: Specs, Release Date, and Price Confirmed - GameSpot
When Did The PS4 Come Out? - PlayStation Universe
The PlayStation 4 revisited: small improvements for a solid system | Engadget
The Evolution of PlayStation Consoles - GameSpot
PlayStation 4 - Wikipedia
PS5 Release Date: When Did the PS5 Come Out? | Push Square
PS4 | Incredible games, non-stop entertainment | PlayStation
A Comparison of Playstation 4 Models
PlayStation 4 - Wikipedia
PlayStation 4 - Simple English Wikipedia, the free encyclopedia
PlayStation 4 | PlayStation Wiki | Fandom
Sony announces PlayStation 4 release date | Eurogamer.net
PlayStation 4 | PlayStation Wiki | Fandom
The Evolution of the PlayStation Controller - IGN
When Did the PS4 Come Out? Release Date and Timeline | Attack of the Fanboy
Amazon.com: Sony PlayStation 4 Pro 1TB Console - Black (PS4 Pro) : Video Games
Sony will show off the first PlayStation 5 games on June 4th | TechCrunch
20th anniversary PS4 nabs $20K on eBay - CNET
