Wellek, R. (1956). Theory of literature. Penguin.
Cita Chicago (17th ed.)Wellek, Rene. Theory of Literature. New York: Penguin, 1956.
Cita MLA (9th ed.)Wellek, Rene. Theory of Literature. Penguin, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.