Citazione Stile APA (7a Edizione)

Gershwin, G., Gershwin, I., & Heyward, D. (1992). Selections from Porgy and Bess. Warner Bros. Publications.

Citazione stile Chigago Style (17a edizione)

Gershwin, George, Ira Gershwin, e DuBose Heyward. Selections from Porgy and Bess. Secaucus, N.J.: Warner Bros. Publications, 1992.

Citatione MLA (9a ed.)

Gershwin, George, et al. Selections from Porgy and Bess. Warner Bros. Publications, 1992.