APA (7th ed.) Citation

Gershwin, I., Wimmer, M., Gershwin, G., Heyward, D., & Heyward, D. (1999). Summertime: From Porgy and Bess. Simon & Schuster.

Chicago Style (17th ed.) Citation

Gershwin, Ira, Mike Wimmer, George Gershwin, DuBose Heyward, and Dorothy Heyward. Summertime: From Porgy and Bess. New York: Simon & Schuster, 1999.

MLA (8th ed.) Citation

Gershwin, Ira, et al. Summertime: From Porgy and Bess. Simon & Schuster, 1999.

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