APA (7th ed.) Citation

Gershwin, G., & Grofe, F. (1942). Rhapsody in blue. Harms.

Chicago Style (17th ed.) Citation

Gershwin, George, and Ferde Grofe. Rhapsody in Blue. [New York]: Harms, 1942.

MLA (9th ed.) Citation

Gershwin, George, and Ferde Grofe. Rhapsody in Blue. Harms, 1942.