Foss, P., & Gershwin, G. (1991). The Music & lyrics of George Gershwin. Peter Foss.
Lua i Stíl Chicago (17ú heag.)Foss, Peter, agus George Gershwin. The Music & Lyrics of George Gershwin. London: Peter Foss, 1991.
Lua MLA (9ú heag.)Foss, Peter, agus George Gershwin. The Music & Lyrics of George Gershwin. Peter Foss, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.