Secrest, M. (1999). Stephen Sondheim. Bloomsbury.
Lua i Stíl Chicago (17ú heag.)Secrest, Meryle. Stephen Sondheim. London: Bloomsbury, 1999.
Lua MLA (9ú heag.)Secrest, Meryle. Stephen Sondheim. Bloomsbury, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.