PS4 vs Xbox One in the US – VGChartz Gap Charts – September 2019
Hardware and Software sales 2019 in many countries | ResetEra
PS4 Software Sales Were About 8 Sold Every Second in 2019
Xbox One vs PS4 vs Switch: Console and Game Sales Numbers - 2020 | Hooked On Tech
Switch vs PS4 vs Xbox One Global Lifetime Sales – December 2019
Switch vs PS4 vs Xbox One Global Lifetime Sales – December 2019 | N4G
/cdn.vox-cdn.com/uploads/chorus_image/image/66227364/jbareham_180822_0800_0211.0.jpg "PS4 game sales top 1 billion all-time, says Sony - Polygon")
PS4 game sales top 1 billion all-time, says Sony - Polygon
Switch vs PS4 vs Xbox One Global Lifetime Sales – March 2019
PlayStation 4 Sales Exceed 91.6 Million Units Worldwide - IGN
Putting the PS4's 100 million sales in context | Ars Technica
PlayStation 4 Sales Decline in 2019 Compared to the Previous Year
Switch vs PS4 vs Xbox One Global Lifetime Sales – June 2019 | N4G
PS4 vs Xbox One vs Switch: Console and Game Sales Numbers - 2019 | Hooked On Tech
PlayStation 4 sales hit 110.4 million, probably won't beat PS2 sales | TweakTown
PLAYSTATION 4 SALES SURPASS 91.6 MILLION UNITS WORLDWIDE AFTER THE STRONG HOLIDAY SEASON ~ Marvel's Spider-Man Sells more than 9 Million Copies Worldwide ~
Switch vs PS4 vs Xbox One Global Lifetime Sales – July 2019
2019 was the second biggest year ever for PlayStation sales | Metro News
Switch vs PS4 vs Xbox One Global Lifetime Sales – July 2019
PlayStation 4 sales are slowing as PS5 looms this year - The Verge
Definite Pick-Ups From PlayStation Malaysia's 2019 Holiday Sale | KAKUCHOPUREI.COM
CES 2020: Sony announces updated PlayStation statistics – PS4 sales reach 106 million | KitGuru
