Shuman, R. B. (1964). Robert E. Sherwood. Twayne Publishers.
Lua i Stíl Chicago (17ú heag.)Shuman, Robert Baird. Robert E. Sherwood. New York: Twayne Publishers, 1964.
Lua MLA (9ú heag.)Shuman, Robert Baird. Robert E. Sherwood. Twayne Publishers, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.