Beethoven, L. v., & Unger, M. Leonore, overture no. 1: To the opera "Leonore" ("Fidelio"). Eulenburg.
芝加哥风格引文Beethoven, Ludwig van, 与 Max Unger. Leonore, Overture No. 1: To the Opera "Leonore" ("Fidelio"). London: Eulenburg.
MLA引文Beethoven, Ludwig van, 与 Max Unger. Leonore, Overture No. 1: To the Opera "Leonore" ("Fidelio"). Eulenburg.
警告：这些引文格式不一定是100％准确.