Bargainnier, Earl. The Gentle Art of Murder: The Detective Fiction of Agatha Christie. Ohio: Bowling Green University Popular Press, 1990.

Christie, Agatha. An Autobiography. New York: Berkley Publishing Group, 1996.

Dommermuth-Costa, Carole. Agatha Christie: Writer of Mystery. Minneapolis: The Lerner Publishing Group, 1997.

http://christie.mysterynet.com

http://www.angelfire.com/fl/christianx/agatha.html

Jorge Tenreiro
Yale University