Here's the entire book in text form, including the missing 21st chapter that wasn't part of the film.
http://kubrickmovies.hostei.com/aconovel.html
http://kubrickmovies.hostei.com/aconovel2.html
http://kubrickmovies.hostei.com/aconovel3.html
The 21st chapter?
The 21st chapter was printed in the original 1962 edition in the UK. This was part of Burgess's plan, as the book was divided into three parts, seven chapters each, ending with 21 or the age a boy becomes a man. (Back then, now it is 1
. Norton publishers in the USA didn't like it and wouldn't publish the book unless Burgess dropped it, so he reluctantly agreed. Therefore from 1963 until the books' 25th anniversary in 1987 the chapter didn't exist in the US. Believe it or not it was first exclusively published with the Resucked Introduction in Rolling Stone Magazine #496 on 3/26/87, pgs 74-80, featuring The Bangles on the cover. Later that year it was restored to all US paperback releases.
In the UK & Australia after the movie was released the paperback was switched to follow the movie and was scaled back to 20 chapters. After Burgess' death it was once again restored so in 1994 all books in the UK had the 21st chapter again. When Kubrick was writing the screenplay he eventually became aware of the 21st chapter and didn't like it. After he showed the film to Burgess he lied and said he didn't know about the chapter as he went from the text of the the American edition. Burgess was furious at his publisher, but later was extremely resentful of Kubrick when he found out the truth.
http://www.malcolmtribute.freeiz.com/aco/21stchapter.html

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