Stern, M. (1979). Douglas Sirk. Twayne Publishers.
Lua i Stíl Chicago (17ú heag.)Stern, Michael. Douglas Sirk. Boston: Twayne Publishers, 1979.
Lua MLA (9ú heag.)Stern, Michael. Douglas Sirk. Twayne Publishers, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.