APA (7th ed.) Citation

Rosenthal, H. D. (1956). Sopranos of today: Studies of twenty-five opera singers. J. Calder.

Chicago Style (17th ed.) Citation

Rosenthal, Harold D. Sopranos of Today: Studies of Twenty-five Opera Singers. London: J. Calder, 1956.

MLA (9th ed.) Citation

Rosenthal, Harold D. Sopranos of Today: Studies of Twenty-five Opera Singers. J. Calder, 1956.

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