NPD: Madden NFL 13 tops US September sales - GameSpot
NPD: Madden NFL 13 tops US September sales - GameSpot
10th Straight Month of Declines for U.S. Games Industry in August
NPD September 2012 Sales Results [Up2: Madden, Fixed 3DS Minimum
NPD: Q3 Video Game Spending Slipped 5% to $12.3 Billion - Media
Video Game Charts, Game Sales, Top Sellers, Game Data - VGChartz
Top Ten Best-Selling Games In the US for September 2015 - GameSpot
List of best-selling Xbox 360 video games - Wikipedia
NPD September 2021 - PS5 was the best selling system of the month