Pinkerton: "A General Collection of the Best and Most Interesting Voyages, Volume 3", London 1809, p. 158. The same tradition is transmitted in “The Scottish journal of topography, antiquities, traditions”. Edinburgh: Stevenson and Menzies. 1842: 248. Chú thích journal cần |journal= (trợ giúp)
Soc. Diff. Use. Knowl. (1842), p. 310 in Society for Diffusion of Useful Knowledge (1842). The Biographical Dictionary. London: Longman, Brown, Green, and Longmans. tr. 310.
Anno 22 Henry VIII (1530–31), Chapter 9, in The Statutes of the Realm Vol. 3: The Statutes of King Henry VIII (By Command 1817), Reprint (Dawsons of Pall Mall, London, 1963), p. 326 (HathiTrust).
Kesselring, K.J. (September 2001), A Draft of the 1531 'Acte for Poysoning', The English Historical Review Vol. 116, No. 468, pp. 894–899, JSTOR579196.