William Shakespeare (2013). “The Wars of the Roses In Plain and Simple English: Includes Henry VI Parts 1 - 3 & Richard III, Richard II, Henry IV Parts 1 and 2, and Henry V”, p.786, BookCaps Study Guides
William Shakespeare (1838). “Complete Works: With Dr. Johnson's Preface, a Glossary, and an Account of Each Play, and a Memoir of the Author by William Harness”, p.478