Cita APA (7th ed.)

Bourne, J., & Kennedy, M. (1998). Who's who in opera: A guide to opera characters. Oxford University Press.

Cita Chicago (17th ed.)

Bourne, Joyce, i Michael Kennedy. Who's Who in Opera: A Guide to Opera Characters. Oxford: Oxford University Press, 1998.

Cita MLA (9th ed.)

Bourne, Joyce, i Michael Kennedy. Who's Who in Opera: A Guide to Opera Characters. Oxford University Press, 1998.