Yes. Anything that is a direct quote, such as this appears to be, would need to be cited. The citation, internally, would be (Malamud 238) or whatever the page number is. If you are only dealing with one of his novels, as I assume you are, then there is no need to continually cite the novel itself.
After your first citation, and until you reference another critic or author, you need only need cite the page #. So, let's say the first sentence is: For the protonist, "baseball was the best game that ever was" (Malamud 238). He believed "wholeheartedly in the game" (250).