Chamberlain, R. L. (1965). George Crabbe. Twayne Publishers.
Lua i Stíl Chicago (17ú heag.)Chamberlain, Robert Lyall. George Crabbe. New York: Twayne Publishers, 1965.
Lua MLA (9ú heag.)Chamberlain, Robert Lyall. George Crabbe. Twayne Publishers, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.