APA (7th ed.) Citation

Christie, A. (1959). Cat among the pigeons. Published for the Crime Club by Collins.

Chicago Style (17th ed.) Citation

Christie, Agatha. Cat Among the Pigeons. London: Published for the Crime Club by Collins, 1959.

MLA (8th ed.) Citation

Christie, Agatha. Cat Among the Pigeons. Published for the Crime Club by Collins, 1959.