APA (7th ed.) Citation

Bourne, J. (1999). Who's who in opera: A guide to opera characters (1st issued with corr.). Oxford University Press.

Chicago Style (17th ed.) Citation

Bourne, Joyce. Who's Who in Opera: A Guide to Opera Characters. 1st issued with corr. Oxford [etc.]: Oxford University Press, 1999.

MLA (9th ed.) Citation

Bourne, Joyce. Who's Who in Opera: A Guide to Opera Characters. 1st issued with corr. Oxford University Press, 1999.