APA (7th ed.) Citation

Knapp, J. M. (1975). The magic of opera. Hale.

Chicago Style (17th ed.) Citation

Knapp, John Merrill. The Magic of Opera. London: Hale, 1975.

MLA (9th ed.) Citation

Knapp, John Merrill. The Magic of Opera. Hale, 1975.

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