Eyck, E. (1963). Bismarck and the German empire. Great Britain: Novello & Copany.
Chicago Style aipamenaEyck, Erich. Bismarck and the German Empire. Great Britain: Novello & Copany, 1963.
MLA aipamenaEyck, Erich. Bismarck and the German Empire. Great Britain: Novello & Copany, 1963.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.