APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Wellek, René, and Austin Warren. Theory of Literature. 3. ed., repr. Penguin Books, 1973.