APA (7th ed.) Citation

Boyden, M., & Buckley, J. (1997). Opera: The rough guide ([1st ed.].). Rough Guides.

Chicago Style (17th ed.) Citation

Boyden, Matthew, and Jonathan Buckley. Opera: The Rough Guide. [1st ed.]. London: Rough Guides, 1997.

MLA (9th ed.) Citation

Boyden, Matthew, and Jonathan Buckley. Opera: The Rough Guide. [1st ed.]. Rough Guides, 1997.