APA (7th ed.) Citation

Christie, A. (1958). Ordeal by innocence: Agatha Christie. Collins.

Chicago Style (17th ed.) Citation

Christie, Agatha. Ordeal by Innocence: Agatha Christie. London: Collins, 1958.

MLA (8th ed.) Citation

Christie, Agatha. Ordeal by Innocence: Agatha Christie. Collins, 1958.

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