APA (7th ed.) Citation

Langland, W., Wells, H. W., & Coghill, N. (1968). The vision of Piers Plowman. Greenwood Press.

Chicago Style (17th ed.) Citation

Langland, William, Henry W. Wells, and Nevill Coghill. The Vision of Piers Plowman. New York: Greenwood Press, 1968.

MLA (9th ed.) Citation

Langland, William, et al. The Vision of Piers Plowman. Greenwood Press, 1968.