Gershwin, G., Gershwin, I., & Carter, D. (1964). Stiff Upper Lip. Alfred Publishing Co., Inc..
Lua i Stíl Chicago (17ú heag.)Gershwin, George, Ira Gershwin, agus Desmond Carter. Stiff Upper Lip. Louisville, United States: Alfred Publishing Co., Inc., 1964.
Lua MLA (9ú heag.)Gershwin, George, et al. Stiff Upper Lip. Alfred Publishing Co., Inc., 1964.
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