APA (7th ed.) Citation

Christie, A. (2016). Poirot's early cases. HarperCollins Publishers, Ltd..

Chicago Style (17th ed.) Citation

Christie, Agatha. Poirot's Early Cases. London: HarperCollins Publishers, Ltd., 2016.

MLA (9th ed.) Citation

Christie, Agatha. Poirot's Early Cases. HarperCollins Publishers, Ltd., 2016.

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