Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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