APA (7th ed.) Citation

Kobbé, G., & Harewood, G. L. (1976). Kobbé's complete opera book (9th ed.). Putnam.

Chicago Style (17th ed.) Citation

Kobbé, Gustav, and George Lascelles Harewood. Kobbé's Complete Opera Book. 9th ed. London: Putnam, 1976.

MLA (9th ed.) Citation

Kobbé, Gustav, and George Lascelles Harewood. Kobbé's Complete Opera Book. 9th ed. Putnam, 1976.

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