What is the author's style in The Brave by Robert Lipsyte?

This novel is written in both third person objective and in first person from Sonny's point of view. It offers insight into his thoughts and reactions to situations as well as his feelings and beliefs. The third person and first-person sections flow seamlessly from one to the other so the reader gets a well rounded-picture of each scenario. For example, in the opening of the book, the author writes in third person as Sonny enters the ring for a fight. During the third person narration in the first paragraph, Sonny interjects his thoughts regarding the situation. After two sentences in first person, the writing goes back to third person, detailing the events.