APA (7th ed.) Citation

Beethoven, L. v., & Kufferath, M. Fidelio: Opéra en deux actes. Breitkopf & Härtel.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, and M. Kufferath. Fidelio: Opéra En Deux Actes. Leipzig: Breitkopf & Härtel.

MLA (9th ed.) Citation

Beethoven, Ludwig van, and M. Kufferath. Fidelio: Opéra En Deux Actes. Breitkopf & Härtel.

Warning: These citations may not always be 100% accurate.