Which of these authors' books is the film "A Clockwork Orange" based upon?

John Anthony Burgess Wilson,(25 February 1917 – 22 November 1993), who published under the name Anthony Burgess, was an English writer and composer.

Although Burgess was predominantly a comic writer, his dystopian satire "A Clockwork Orange" remains his best-known novel. In 1971, it was adapted into a highly controversial film by Stanley Kubrick, which Burgess said was chiefly responsible for the popularity of the book.

Alex (Malcolm McDowell), the central character, is a charismatic, antisocial delinquent whose interests include classical music (including Beethoven), committing rape, and what is termed "ultra-violence". He leads a small gang of thugs, Pete (Michael Tarn), Georgie (James Marcus), and Dim (Warren Clarke), whom he calls his droogs (from the Russian word друг, "friend", "buddy"). The film chronicles the horrific crime spree of his gang, his capture, and attempted rehabilitation via an experimental psychological conditioning technique (the "Ludovico Technique") promoted by the Minister of the Interior (Anthony Sharp). Alex narrates most of the film in Nadsat, a fractured adolescent slang composed of Slavic (especially Russian), English, and Cockney rhyming slang.

The soundtrack to "A Clockwork Orange" features mostly classical music selections and Moog synthesizer compositions by Wendy Carlos. The artwork for the poster of "A Clockwork Orange" was created by Philip Castle with the layout by designer Bill Gold.