Cita APA (7a ed.)

Wellek, R., & Warren, A. (1980). Theory of Literature. Penguin.

Cita Chicago Style (17a ed.)

Wellek, René, y Austin Warren. Theory of Literature. Harmondsworth: Penguin, 1980.

Cita MLA (8a ed.)

Wellek, René, y Austin Warren. Theory of Literature. Penguin, 1980.