APA (7th ed.) Citation

Gershwin, G., & Potts, B. (1935). Porgy & Bess medley ([Partitur, Stimmen].). Sierra Music Publications.

Chicago Style (17th ed.) Citation

Gershwin, George, and Bill Potts. Porgy & Bess Medley. [Partitur, Stimmen]. Liberty Lake, WA: Sierra Music Publications, 1935.

MLA (9th ed.) Citation

Gershwin, George, and Bill Potts. Porgy & Bess Medley. [Partitur, Stimmen]. Sierra Music Publications, 1935.

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