Donaldson, E. T. (1966). Piers Plowman: The C-text and its poet ([New ed.].). Archon Books.
Cita Chicago (17th ed.)Donaldson, Ethelbert Talbot. Piers Plowman: The C-text and Its Poet. [New ed.]. [Hamden, Conn.]: Archon Books, 1966.
Cita MLA (9th ed.)Donaldson, Ethelbert Talbot. Piers Plowman: The C-text and Its Poet. [New ed.]. Archon Books, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.