Winnie-the-Pooh is written by A. A. MilneA. A. Milne wrote Winnie-the-PoohWinnie-the-Pooh is written by A. A. Milne. A. A. Milne : `Influenced By`: Kenneth Grahame
[Human]: Do you have the Book Winnie-the-Pooh? [Assistant]: Sure...by A.a. Milne. That's a great children's book. [Human]: Yes, Did A.A. Milne happen to write anything else similar? 
Actually, A.A. Milne also wrote The Adventures of Tom Sawyer, which is similar to Winnie-the-Pooh.