Rolland, R. (1970). Beethoven. Rütten & Loening.
Cita Chicago (17th ed.)Rolland, Romain. Beethoven. Berlin: Rütten & Loening, 1970.
Cita MLA (8th ed.)Rolland, Romain. Beethoven. Rütten & Loening, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.