APA (7th ed.) Citation

Langland, W., Turville-Petre, T., & Duggan, H. N. (2000). The Piers Plowman electronic archive. University of Michigan Press.

Chicago Style (17th ed.) Citation

Langland, William, Thorlac Turville-Petre, and Hoyt N. Duggan. The Piers Plowman Electronic Archive. Ann Arbor, Mich.: University of Michigan Press, 2000.

MLA (9th ed.) Citation

Langland, William, et al. The Piers Plowman Electronic Archive. University of Michigan Press, 2000.