APA (7th ed.) Citation

Christie, A. (2002). They do it with mirrors. HarperCollins.

Chicago Style (17th ed.) Citation

Christie, Agatha. They Do It with Mirrors. London: HarperCollins, 2002.

MLA (9th ed.) Citation

Christie, Agatha. They Do It with Mirrors. HarperCollins, 2002.

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