Nintendo Switch Achieves Its Best October Sales to Date – NintendoSoup
August 2020 NPD: Madden NFL 21 Tackles As Switch Continues Sales Streak - GameSpot
Marvel's Avengers & Nintendo Assemble at the Top of September's U.S. Game Sales Charts – Working Casual
NPD 2008 sales figures, Video Game Sales Wiki
US game spending up 3% to $4.4bn in September, says NPD
Video game sales skyrocket to record highs
Latest NPD Report Reveals Nintendo Had Its Best Hardware Sales For The Month Of August - mxdwn Games
Sony PlayStation 5 Best-Selling Console Ever
Nintendo Switch Makes History, Destroys PlayStation and Wii on All-Time Sales Charts - EssentiallySports