APA (7th ed.) Citation

Christie, A. (1968). Poirot loses a client. Dell Books.

Chicago Style (17th ed.) Citation

Christie, Agatha. Poirot Loses a Client. New York: Dell Books, 1968.

MLA (9th ed.) Citation

Christie, Agatha. Poirot Loses a Client. Dell Books, 1968.

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