Cita APA (7a ed.)

Beethoven, L. v., Treitschke, G. F., & Bouilly, J. N. (1839). Fidelio, or, Constancy rewarded: An opera in three acts. H. Kimber.

Cita Chicago Style (17a ed.)

Beethoven, Ludwig van, Georg Friedrich Treitschke, y Jean Nicolas Bouilly. Fidelio, or, Constancy Rewarded: An Opera in Three Acts. New York: H. Kimber, 1839.

Cita MLA (8a ed.)

Beethoven, Ludwig van, et al. Fidelio, or, Constancy Rewarded: An Opera in Three Acts. H. Kimber, 1839.