- Chaucer and Langland: Historical and Textual Approaches
- Piers Plowman Glossary: Will's Visions of Piers Plowman, Do-Well, Do-Better and Do-Best (Piers Plowman Glossary)
- Piers Plowman: The Evidence for Authorship
- Chaucer and Langland: Historical Textual Approaches
- Chaucer and Langland: Historical Textual Approaches