Zierer, O. (1959). Schiller in Weimar: Otto Zierer. Lux.
Cita Chicago (17th ed.)Zierer, Otto. Schiller in Weimar: Otto Zierer. Murnau [u.a.]: Lux, 1959.
Cita MLA (8th ed.)Zierer, Otto. Schiller in Weimar: Otto Zierer. Lux, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.