Wellek, R., & Warren, A. (1949). Theory of literature ([1st ed.].). Harcourt, Brace.
Lua i Stíl Chicago (17ú heag.)Wellek, Rene, agus Austin Warren. Theory of Literature. [1st ed.]. New York: Harcourt, Brace, 1949.
Lua MLA (8ú heag.)Wellek, Rene, agus Austin Warren. Theory of Literature. [1st ed.]. Harcourt, Brace, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.