Cita APA (7th ed.)

Wellek, R., & Warren, A. (1956). Theory of literature (3rd ed.). Harcourt.

Cita Chicago (17th ed.)

Wellek, Rene, i Austin Warren. Theory of Literature. 3rd ed. New York: Harcourt, 1956.

Cita MLA (9th ed.)

Wellek, Rene, i Austin Warren. Theory of Literature. 3rd ed. Harcourt, 1956.