References
Tudor, E. (2000). Elizabeth I Collected Works. L.S. Marcus, J. Mueller & M. B. Rose (Eds.). Chicago, IL: The University of Chicago Press.
Additional Reading
Encyclopedia Britannica http://www.britannica.com/EBchecked/topic/509963/Wars-of-the-Roses
Englishheritage.org
Levin, C. (1994). The Heart and Stomach of a King: Elizabeth I and the politics and sex and power. Philadelphia, PA: University of Pennsylvania Press.
Modernhistorysourcebook.org
Montrose, Louis. (2006). The Subject of Elizabeth: Authority, gender, and representation. Chicago, IL: The University of Chicago Press.
Tudorhistory.org