^Rapple, Rory (2009). Martial Power and Elizabethan Political Culture: Military Men in England and Ireland, 1558-1594. Cambridge University Press. p. 244. ISBN 9780521843539.
^Millett, Benignus (1983). "The Ordination of Dermot O Hurley, 1581". Collectanea Hibernica (25): 12–21. JSTOR 30004636.
^"John Derricke's Images of Ireland, 1581 AD". irisharchaeology.ie. Retrieved 4 April 2018.
^"James Ussher". www.westminster-abbey.org. Archived from the original on 27 December 2017. Retrieved 4 April 2018.
^Mayer, T. F. (2004). "Sander [Sanders], Nicholas (c. 1530–1581), religious controversialist". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/24621. Retrieved 4 April 2018. (Subscription or UK public library membership required.)