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 (8th ed.) Citation

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