APA (7th ed.) Citation

Osborne, C., & Christie, A. (2003). The unexpected guest (Agatha Christie signature ed.). HarperCollins.

Chicago Style (17th ed.) Citation

Osborne, Charles, and Agatha Christie. The Unexpected Guest. Agatha Christie signature ed. London: HarperCollins, 2003.

MLA (9th ed.) Citation

Osborne, Charles, and Agatha Christie. The Unexpected Guest. Agatha Christie signature ed. HarperCollins, 2003.

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