Eddie Yeghiayan
Alford, John A. Edited. A Companion to Piers Plowman. Berkeley: University of California Press, 1988.
Alford, John A. and Dennis P. Seniff. Literature and Law in the Middle Ages: A Bibliography of Scholarship. Garland Reference Library of the Humanities, 378. New York;London: Garland, 1984.
Alford, John A. Piers Plowman: A Glossary of Legal Diction. Piers Plowman Studies, 5. Cambridge: Brewer, 1988.