APA (7th ed.) Citation

Christie, A. (2002). A murder is announced. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Christie, Agatha. A Murder Is Announced. London: HarperCollins Publishers, 2002.

MLA (9th ed.) Citation

Christie, Agatha. A Murder Is Announced. HarperCollins Publishers, 2002.

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