APA (7th ed.) Citation

Christie, A. (1986). Why didn't they ask Evans? Fontana, Collins.

Chicago Style (17th ed.) Citation

Christie, Agatha. Why Didn't They Ask Evans? Glasgow: Fontana, Collins, 1986.

MLA (8th ed.) Citation

Christie, Agatha. Why Didn't They Ask Evans? Fontana, Collins, 1986.

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