APA (7th ed.) Citation

Christie, A. (1939). The ABC murders. HarperCollins Publisher.

Chicago Style (17th ed.) Citation

Christie, Agatha. The ABC Murders. London: HarperCollins Publisher, 1939.

MLA (9th ed.) Citation

Christie, Agatha. The ABC Murders. HarperCollins Publisher, 1939.

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