APA (7th ed.) Citation

Alagna, R., Berganza, T., Bostridge, I., Brightman, S., Caballé, M., Callas, M., . . . Wagner, R. (2009). Opera 2009. EMI Classics.

Chicago Style (17th ed.) Citation

Alagna, Roberto, et al. Opera 2009. [Hayes, Middlesex, England]: EMI Classics, 2009.

MLA (9th ed.) Citation

Alagna, Roberto, et al. Opera 2009. EMI Classics, 2009.