What is the author's style in The Sweet Hereafter by Russell Banks?

The book is written in narrative language, with four different narrators. The way sentences are constructed and overall feel of the material changes depending on the speaker. Dolores narrates in a matter-of-fact, genuine way that reflects the down-to-earth personality that her community respects. Billy’s narration is darker in nature, touching on the deep pain of losing a wife and children too early. His outlook on life is bleak and his language shows signs of depression.