What is the author's style in The Dead and the Gone by Susan Beth Pfeffer?

The language of the novel is extremely informal, as it is written in the perspective of a seventeen year old modern New York boy. The sentence structure is modern, with use of common slang and using not always proper English, making it simple to read, while still engaging. The language style adds to the novel, as it portrays Alex's world more clearly, and more understandably, through words and concepts common to a young man of his age.