APA (7th ed.) Citation

Christie, A. (1961). The Sttaford Mystery. Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Christie, Agatha. The Sttaford Mystery. London: Harper Collins Publishers, 1961.

MLA (9th ed.) Citation

Christie, Agatha. The Sttaford Mystery. Harper Collins Publishers, 1961.

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