APA (7th ed.) Citation

Ellis, B. E. (1991). American psycho : a novel / by Bret Easton Ellis: A novel. Picador.

Chicago Style (17th ed.) Citation

Ellis, Bret Easton. American Psycho : A Novel / by Bret Easton Ellis: A Novel. London: Picador, 1991.

MLA (9th ed.) Citation

Ellis, Bret Easton. American Psycho : A Novel / by Bret Easton Ellis: A Novel. Picador, 1991.

Warning: These citations may not always be 100% accurate.