APA (7th ed.) Citation

Alpert, H. (1990). The life and times of Porgy and Bess: The story of an American classic. Knopf.

Chicago Style (17th ed.) Citation

Alpert, Hollis. The Life and Times of Porgy and Bess: The Story of an American Classic. New York: Knopf, 1990.

MLA (9th ed.) Citation

Alpert, Hollis. The Life and Times of Porgy and Bess: The Story of an American Classic. Knopf, 1990.

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