APA (7th ed.) Citation

Beethoven, L. v., Mattila, K., Heppner, B., & Levine, J. (2003). Fidelio: Opera in two acts. Dt. Grammophon.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, Karita Mattila, Ben Heppner, and James Levine. Fidelio: Opera in Two Acts. Hamburg: Dt. Grammophon, 2003.

MLA (9th ed.) Citation

Beethoven, Ludwig van, et al. Fidelio: Opera in Two Acts. Dt. Grammophon, 2003.