APA (7th ed.) Citation

Gardner, J. (1989). Grendel (Vintage Books ed.). Vintage Books.

Chicago Style (17th ed.) Citation

Gardner, John. Grendel. Vintage Books ed. New York: Vintage Books, 1989.

MLA (8th ed.) Citation

Gardner, John. Grendel. Vintage Books ed. Vintage Books, 1989.

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