APA (7th ed.) Citation

Christie, A. (1993). The Clock. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Christie, Agatha. The Clock. London: HarperCollins Publishers, 1993.

MLA (9th ed.) Citation

Christie, Agatha. The Clock. HarperCollins Publishers, 1993.

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