Παραπομπή APA

Wellek, R. W. (1949). Theory of Literature. Penguin Books.

Παραπομπή Chicago Style

Wellek, Rene Warren. Theory of Literature. England: Penguin Books, 1949.

Παραπομπή MLA

Wellek, Rene Warren. Theory of Literature. Penguin Books, 1949.