Paraphrasing

Original Way:
 The twenties were the years when drinking was against the law, and the law was a bad joke because everyone knew of a local bar where liquor could be had. They were the years when organized crime ruled the cities, and the police seemed powerless to do anything against it. Classical music was forgotten while jazz spread throughout the land, and men like Bix Beiderbecke, Louis Armstrong, and Count Basie became the heroes of the young. The flapper was born in the twenties, and with her bobbed hair and short skirts, she symbolized, perhaps more than anyone or anything else, America's break with the past. From Kathleen Yancey, English 102 Supplemental Guide (1989): 25.


Correct way:
During the twenties  lawlessness and social nonconformity prevailed. In cities organized crime flourished without police interference, and in spite of nationwide prohibition of liquor sales, anyone who wish to but a drink knew where to get one. Musicians like Louis Armstrong became favorites, particularly among young people, as many turned away from highly respectable classical music to jazz. One of the best examples of the anti-traditional trend was the proliferation of young "flappers," women who rebelled against custom by cutting their hair and shortening their skirts (Yancey 25)

or

As Kathleen Yancey points out in her book English 102: Supplemental Guide



at the end put (25)