APA (7th ed.) Citation

Christie, A. (1994). Dumb witness. HarperCollins.

Chicago Style (17th ed.) Citation

Christie, Agatha. Dumb Witness. London: HarperCollins, 1994.

MLA (9th ed.) Citation

Christie, Agatha. Dumb Witness. HarperCollins, 1994.

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