PS4 Sales Reach 117.2 Million Units As Production Winds Down - GameSpot

Pour one out for the PS4, as it reaches the end of its lifecycle.

History of video game consoles - Wikipedia

Xbox One - Wikipedia

PS4 sales top 20.2 million units worldwide - Polygon

PlayStation 4, Video Game Sales Wiki

PlayStation 4, Ultimate Pop Culture Wiki

The Best-Selling Video Game Consoles of All Time - IGN

Sony's PS4 is the fastest console to reach 100 million units sold - news

PS4 vs Xbox One vs Switch Global Lifetime Sales – August 2017 Update

PlayStation 4 - Wikipedia

PlayStation 4 sales reach 4.2 million, outselling Xbox One by 1.2 million units in 2013 - GameSpot

History of video game consoles - Wikipedia

PS5 Reaches 25 Million Units Sold As PS Plus Loses 2 Million Members Following Revamp - GameSpot

PlayStation 4 sales hit 112.3 million worldwide, up 1.9 million in Q1

PlayStation 4, Ultimate Pop Culture Wiki

The Best-Selling Video Game Consoles of All Time - IGN