APA (7th ed.) Citation

Greenfield, S. B. (1965). A Critical history of old English literature. New York University Press.

Chicago Style (17th ed.) Citation

Greenfield, Stanley B. A Critical History of Old English Literature. New York: New York University Press, 1965.

MLA (9th ed.) Citation

Greenfield, Stanley B. A Critical History of Old English Literature. New York University Press, 1965.