APA (7th ed.) Citation

Christie, A. (1947). The Labours Of Hercules. Fontana Collins.

Chicago Style (17th ed.) Citation

Christie, Agatha. The Labours Of Hercules. London: Fontana Collins, 1947.

MLA (9th ed.) Citation

Christie, Agatha. The Labours Of Hercules. Fontana Collins, 1947.

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