Henning, O. (1964). Urania Berlin. Stapp.
Cita Chicago (17th ed.)Henning, Otto. Urania Berlin. Berlin: Stapp, 1964.
Cita MLA (8th ed.)Henning, Otto. Urania Berlin. Stapp, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.
Henning, O. (1964). Urania Berlin. Stapp.
Cita Chicago (17th ed.)Henning, Otto. Urania Berlin. Berlin: Stapp, 1964.
Cita MLA (8th ed.)Henning, Otto. Urania Berlin. Stapp, 1964.