Hemingway, E. (1974). For whom the bell tolls. Penguin.
Chicago Style aipamenaHemingway, Ernest. For Whom the Bell Tolls. England: Penguin, 1974.
MLA aipamenaHemingway, Ernest. For Whom the Bell Tolls. Penguin, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.