Online auctions show more early demand for PS4 over Xbox One | Ars Technica
Xbox One and PS4 sales numbers don't matter right now (but you don't care) - GameSpot
Final Sales Number For The PS4 Is Staggering
Analysis: Worldwide PS4 sales at least 40 percent better than Xbox One [Updated] | Ars Technica
Global PS4 console unit sales 2021 | Statista
Has the PS4 peaked? Annual console shipments are flat for 2017 [Updated] | Ars Technica
PS4's sales dominance slackens slightly in holiday season | Ars Technica
Sony PlayStation unit sales by console 2021 | Statista
Sony has sold over 70 million PS4 consoles, 2 million VR headsets | TechCrunch
Switch vs PS4 Sales Comparison - June 2022
Switch vs PS4 vs Xbox One Global Lifetime Sales - January 2021
Switch vs PS4 Sales Comparison - October 2021
PS4 Most Successful Console Launch Ever
PlayStation 4 Sales Vs the Best Selling Video Game Consoles: CHART
Switch vs PS4 vs Xbox One Global Lifetime Sales - June 2021
Xbox One slowly narrows its quarterly sales deficit against the PS4 [Updated] | Ars Technica
PS4 the Top-Selling Console in US Again During March 2016 - GameSpot
CES 2020: Sony announces updated PlayStation statistics – PS4 sales reach 106 million | KitGuru
PS4 vs Xbox One vs Switch: Console and Game Sales Numbers - 2019 | Hooked On Tech
Comparing the launch aligned sales figures of the PS4 and Switch reveals that the Switch's momentum is massive, the highest this console generation. 100m seems very possible. : r/NintendoSwitch
PlayStation 4 - Wikipedia
PS5 vs PS4 Sales Comparison - August 2021
Is the PS5 Sony's fastest selling console ever? - Android Authority
PS5 vs PS4 Sales Comparison - August 2021
Updated numbers show PS4 with at least 65 percent of two-console market | Ars Technica