APA Citation

Christie, A. (1922). The secret adversary. London: HarperCollins Publishers.

Chicago Style Citation

Christie, Agatha. The Secret Adversary. London: HarperCollins Publishers, 1922.

MLA Citation

Christie, Agatha. The Secret Adversary. London: HarperCollins Publishers, 1922.

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