Cita APA (7th ed.)
Marcks, E. (1899). Fürst Bismarck.
Cita Chicago (17th ed.)
Marcks, Erich. Fürst Bismarck. Leipzig, 1899.
Cita MLA (9th ed.)
Marcks, Erich. Fürst Bismarck. 1899.
Atenció: Aquestes cites poden no estar 100% correctes.