Books, Brochures, and Chapters>Book:  Shakespeare , William (2011-04-27), King John, CreateSpace, Retrieved on 2011-06-18

Books, Brochures, and Chapters>Book:  Shakespeare , William (2009-07-20), King Lear: The Cambridge Dover Wilson Shakespeare (Cambridge Library Collection - Literary Studies), Cambridge University Press, Retrieved on 2011-04-19

Source Material [shakespeare.mit.edu]