APA (7th ed.) Citation

Christie, A. (1968). The mirror crack'd from side to side (Sixth Impression December 1968.). Collins, Fontana Books.

Chicago Style (17th ed.) Citation

Christie, Agatha. The Mirror Crack'd from Side to Side. Sixth Impression December 1968. London: Collins, Fontana Books, 1968.

MLA (9th ed.) Citation

Christie, Agatha. The Mirror Crack'd from Side to Side. Sixth Impression December 1968. Collins, Fontana Books, 1968.