APA (7th ed.) Citation

Christie, A. (1991). Hallowe'en party: A hercule poirot novel. Berkley Books.

Chicago Style (17th ed.) Citation

Christie, Agatha. Hallowe'en Party: A Hercule Poirot Novel. New York: Berkley Books, 1991.

MLA (9th ed.) Citation

Christie, Agatha. Hallowe'en Party: A Hercule Poirot Novel. Berkley Books, 1991.

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