APA (7th ed.) Citation

Wellek, R., & Warren, A. (1973). Theory of literature (3rd ed., revised.). Penguin.

Chicago Style (17th ed.) Citation

Wellek, René, and Austin Warren. Theory of Literature. 3rd ed., revised. Harmondsworth: Penguin, 1973.

MLA (8th ed.) Citation

Wellek, René, and Austin Warren. Theory of Literature. 3rd ed., revised. Penguin, 1973.