Gershwin, G. (1979). Summertime: The greatest songs of George Gershwin. Chappell.
Lua i Stíl Chicago (17ú heag.)Gershwin, George. Summertime: The Greatest Songs of George Gershwin. [S.l.]: Chappell, 1979.
Lua MLA (9ú heag.)Gershwin, George. Summertime: The Greatest Songs of George Gershwin. Chappell, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.