Xbox One, PlayStation 4 fuel 50% spike in video game console sales - Los Angeles Times
NPD: 70% Of Switch Owners Also Own A PS4 Or Xbox One – NintendoSoup
NPD numbers: Xbox One is the fastest-selling console in the US in November - The Official Microsoft Blog
PlayStation dominates April 2018 NPD data, spending on Xbox One and PS4 drove hardware growth - MSPoweruser
Xbox One beats PlayStation 4 in July 2016 NPD ahead of Xbox One S launch - AR12Gaming
Xbox One is Fastest Selling Console in the US; November NPD Group Figures Revealed - Xbox Wire
November 2017 NPD: Xbox One brings in more spending, but Sony sells more PlayStation 4s | VentureBeat
Xbox One outsold PS4 during the month of July, according to Microsoft and NPD | Shacknews
Microsoft: Xbox One Pre-Orders Outpacing Xbox 360 | PCMag
Sea of Thieves was the second best-selling game in March, hardware spending this year is at a high driven mainly by the Xbox One according to the NPD Group - MSPoweruser
PS5 And Next Xbox Announcements In 2019, PS4/Xbox Sales To Decline, Says NPD Analyst
April NPD: Xbox One outsells PS4 – Destructoid
Xbox One selling more than twice as fast as Xbox 360 - Microsoft on NPD data | VG247
NPD: 70% Of People In U.S Who Own A Nintendo Switch Also Own PS4 Or Xbox One - My Nintendo News
PS4, Xbox One doubling last gen sales - NPD Canada | GamesIndustry.biz
NPD: November was best month ever for PS4, Xbox One | GamesIndustry.biz
August NPD – Xbox 360 Hits 32 Consecutive Months as #1 Console in the U.S. - Xbox Wire
October NPD: Xbox One Beats PS4 In The US Once Again
NPD: Nintendo Switch Sold 1.77 Million Units In The US In December 2018 – NintendoSoup
December 2014 NPD: Xbox One outsells PS4 again | VentureBeat
NPD Group: Xbox One's Victory Streak Ends With PS4 Winning November 2016 - GameRevolution
November 2014 NPD: Xbox One Defeats PS4, Call of Duty is #1
November NPD: Xbox One Overtakes PS4 This Month - Game Informer
NPD Seventh generation | Video Game Sales Wiki | Fandom
