Cita APA (7a ed.)

CHRISTIE, A. (1957). Poirot investigates (3 printing.). Pan Books.

Cita Chicago Style (17a ed.)

CHRISTIE, Agatha. Poirot Investigates. 3 printing. London: Pan Books, 1957.

Cita MLA (9a ed.)

CHRISTIE, Agatha. Poirot Investigates. 3 printing. Pan Books, 1957.