November NPD: Xbox One Overtakes PS4 This Month - Game Informer
NPD Group: Xbox Series Becomes Best-Seller Over Switch and PS5 in March 2022; Has Best March Sales Performance in 11 Years
December 2013 NPD: While both supply constrained, Xbox One outsells PlayStation 4 | VentureBeat
December 2014 NPD: Xbox One outsells PS4 again | VentureBeat
PS5 And Next Xbox Announcements In 2019, PS4/Xbox Sales To Decline, Says NPD Analyst
PS4, Xbox One doubling last gen sales - NPD Canada | GamesIndustry.biz
Xbox One outsold PS4 during the month of July, according to Microsoft and NPD | Shacknews
Xbox One beats PlayStation 4 in July 2016 NPD ahead of Xbox One S launch - AR12Gaming
NPD: Xbox One, PS4 Sales in Canada Double That of 360/PS3's Launch - GameSpot
NPD: PS4 Slim and Xbox One S fail to prevent US sales decline | GamesIndustry.biz
April NPD: Xbox One outsells PS4 – Destructoid
Xbox One is top-selling home console in US for December -- NPD - GameSpot
NPD Group: Xbox One's Victory Streak Ends With PS4 Winning November 2016 - GameRevolution
August NPD – Xbox 360 Hits 32 Consecutive Months as #1 Console in the U.S. - Xbox Wire
Xbox One selling more than twice as fast as Xbox 360 - Microsoft on NPD data | VG247
NPD: The Xbox One Was The Top-Selling Console In July - Game Informer
November 2014 NPD: Xbox One Defeats PS4, Call of Duty is #1
NPD numbers: Xbox One is the fastest-selling console in the US in November - The Official Microsoft Blog
USA: NPD hardware figures sees Switch at No.1, Xbox Series X|S No.2 and PS5 No.3 for May 2022 - My Nintendo News
April 2015 NPD: Xbox One tops PlayStation 4 - Gematsu
NPD: Xbox One is the "fastest-selling" console in November and Call of Duty leads software - GameSpot
Xbox One, PlayStation 4 fuel 50% spike in video game console sales - Los Angeles Times
Xbox One Wins September NPD, Makes it Three Months in a Row
Xbox One is Fastest Selling Console in the US; November NPD Group Figures Revealed - Xbox Wire
PlayStation dominates April 2018 NPD data, spending on Xbox One and PS4 drove hardware growth - MSPoweruser
