Adidas vs Puma: The Story of the Adidas And Puma Brothers
Sneaker Wars: The Enemy Brothers Who Founded Adidas and Puma and the Family Feud That Forever Changed the Business of Sports: 9780061246586: Smit, Barbara: Books - Amazon.com
Adidas scoops up CEO who turned around rival Puma | CNN Business
The sibling rivalry behind Adidas versus Puma - CNN Video
Adidas vs. Nike vs. Under Armour: Who's Really Winning in the US – Footwear News