"How March Became Madness: How the NCAA Tournament Became the Greatest Sporting Event in America" is a 2006 hardcover book written by Eddie Einhorn and Ron Rapoport in English. The book delves into the history and evolution of the NCAA Tournament, showcasing how it has become a beloved sporting event in the United States. Illustrated with 288 pages, the book provides a comprehensive look at the topic of basketball and the excitement surrounding the tournament.