Beethoven, L. v., & Unger, M. (1987). Symphony No. 9: For 4 solo voices, chorus and orchestra ; d minor ; op. 125 / ed. by Max Unger. Eulenburg.
Lua i Stíl Chicago (17ú heag.)Beethoven, Ludwig van, agus Max Unger. Symphony No. 9: For 4 Solo Voices, Chorus and Orchestra ; D Minor ; Op. 125 / Ed. by Max Unger. London [u.a.]: Eulenburg, 1987.
Lua MLA (8ú heag.)Beethoven, Ludwig van, agus Max Unger. Symphony No. 9: For 4 Solo Voices, Chorus and Orchestra ; D Minor ; Op. 125 / Ed. by Max Unger. Eulenburg, 1987.
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