APA (7th ed.) Citation

Wellek, R., & Warren, A. (1976). Theory of Literature. Penguin Books.

Chicago Style (17th ed.) Citation

Wellek, Rene, and Austin;Wellek Warren. Theory of Literature. Penguin Books, 1976.

MLA (9th ed.) Citation

Wellek, Rene, and Austin;Wellek Warren. Theory of Literature. Penguin Books, 1976.

Warning: These citations may not always be 100% accurate.