APA (7th ed.) Citation

Sanders, D. (1985). The Agatha Christie companion: The complete guide to Agatha Christie's life and work. Allen.

Chicago Style (17th ed.) Citation

Sanders, Dennis. The Agatha Christie Companion: The Complete Guide to Agatha Christie's Life and Work. London: Allen, 1985.

MLA (9th ed.) Citation

Sanders, Dennis. The Agatha Christie Companion: The Complete Guide to Agatha Christie's Life and Work. Allen, 1985.