APA (7th ed.) Citation

Theobald, M. (1777). Orpheus and Eurydice; an opera. [publisher not identified].

Chicago Style (17th ed.) Citation

Theobald, Mr. Orpheus and Eurydice; an Opera. [London]: [publisher not identified], 1777.

MLA (9th ed.) Citation

Theobald, Mr. Orpheus and Eurydice; an Opera. [publisher not identified], 1777.

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