APA (7th ed.) Citation

Christie,Agatha. (2018). Ordeal by innocence. Harpercollins Publishers.

Chicago Style (17th ed.) Citation

Christie,Agatha. Ordeal by Innocence. London: Harpercollins Publishers, 2018.

MLA (9th ed.) Citation

Christie,Agatha. Ordeal by Innocence. Harpercollins Publishers, 2018.

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