What is the author's style in The Godfather by Mario Puzo?

A mythology is a collection of myths that has been transferred verbally from one generation to the next. Most mythologies are well known in a culture before anyone writes them down. People usually think of such tales as having happened long ago: for instance, the myths that surround King Arthur and the Knights of the Round Table constitute a specific mythology. In the case of The Godfather, Mario Puzo set out to record the mythology of organized crime as he had heard it while growing up in New York. Many of the stories that he tells are apocryphal. That is, they probably are not true, but they sound so likely that people continue to tell them anyway.