Cita APA (7a ed.)

Offenbach, J., Amcotts, V., Meilhac, H., & Halévy, L. (1860). Fair Helen: A comic opera in three acts. s.n..

Cita Chicago Style (17a ed.)

Offenbach, Jacques, Vincent Amcotts, Henri Meilhac, y Ludovic Halévy. Fair Helen: A Comic Opera in Three Acts. [S.l.: s.n., 1860.

Cita MLA (8a ed.)

Offenbach, Jacques, et al. Fair Helen: A Comic Opera in Three Acts. s.n., 1860.