Cita APA (7a ed.)

Agatha, C. (1972). Elephants can remember: Hercule poirot novel. Berkley books.

Cita Chicago Style (17a ed.)

Agatha, Christie. Elephants Can Remember: Hercule Poirot Novel. New York: Berkley books, 1972.

Cita MLA (9a ed.)

Agatha, Christie. Elephants Can Remember: Hercule Poirot Novel. Berkley books, 1972.