Christie, Agatha, 1890-1976. The murder of Roger Ackroyd / Agatha Christie. - New York : Berkley Books, 2004 - viii, 358 p. ; 20 cm. ISBN: 0425200477 Subjects--Topical Terms: Poirot, Hercule (Fictitious character) -- Fiction.Private investigators -- Fiction.-- England Dewey Class. No.: 823.912