APA (7th ed.) Citation

Upton, G. P. The Standard Operas: Their Plots, Their Music, and Their Composers (12th edition).

Chicago Style (17th ed.) Citation

Upton, George P. The Standard Operas: Their Plots, Their Music, and Their Composers (12th Edition).

MLA (9th ed.) Citation

Upton, George P. The Standard Operas: Their Plots, Their Music, and Their Composers (12th Edition).

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