APA (7th ed.) Citation

Gershwin, G., & Heyward, D. (1977). Porgy and Bess. RCA.

Chicago Style (17th ed.) Citation

Gershwin, George, and DuBose Heyward. Porgy and Bess. New York, NY: RCA, 1977.

MLA (9th ed.) Citation

Gershwin, George, and DuBose Heyward. Porgy and Bess. RCA, 1977.