APA (7th ed.) Citation

Christie, A. (1973). Towards zero (Greenway ed.). Published for the Crime Club by Collins.

Chicago Style (17th ed.) Citation

Christie, Agatha. Towards Zero. Greenway ed. London: Published for the Crime Club by Collins, 1973.

MLA (8th ed.) Citation

Christie, Agatha. Towards Zero. Greenway ed. Published for the Crime Club by Collins, 1973.

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