Wellek, R. (1956). Theory of literature. Penguin.
Lua i Stíl Chicago (17ú heag.)Wellek, Rene. Theory of Literature. New York: Penguin, 1956.
Lua MLA (9ú heag.)Wellek, Rene. Theory of Literature. Penguin, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.