William Shakespeare (2013). “Second Tetralogy In Plain and Simple English: Includes Richard II, Henry IV Parts 1 and 2, and Henry V”, p.308, BookCaps Study Guides
William Shakespeare, Oliver William Bourn Peabody, Samuel Weller Singer, Charles Symmons, John Payne Collier (1839). “The Dramatic Works of William Shakspeare: Winter's tale. Comedy of errors. Macbeth. King John. Richard II. Henry IV, pt. 1”, p.525