Cita APA (7a ed.)

Wellek, R., & Warren, A. (1949). Theory of literature ([1st ed.].). Harcourt, Brace.

Cita Chicago Style (17a ed.)

Wellek, Rene, y Austin Warren. Theory of Literature. [1st ed.]. New York: Harcourt, Brace, 1949.

Cita MLA (8a ed.)

Wellek, Rene, y Austin Warren. Theory of Literature. [1st ed.]. Harcourt, Brace, 1949.