APA引文

Beethoven, L. v., & Unger, M. (1935). Leonore, overture no. 2: For the opera "Leonore" ("Fidelio"), op. 72. Eulenburg.

芝加哥风格引文

Beethoven, Ludwig van, 与 Max Unger. Leonore, Overture No. 2: For the Opera "Leonore" ("Fidelio"), Op. 72. London: Eulenburg, 1935.

MLA引文

Beethoven, Ludwig van, 与 Max Unger. Leonore, Overture No. 2: For the Opera "Leonore" ("Fidelio"), Op. 72. Eulenburg, 1935.