Cranmer, in a letter, describes it as a divorce, but it was clearly not a dissolution of a marriage in the modern sense but the annulment of a marriage which was said to be defective on the grounds of affinity—Catherine was his deceased brother's widow. In his decree, Cranmer uses the words, "...dictum matrimonium..., ut praemittitur, contractum et consummatum, nullum et omnino invalidum fuisse et esse..." Gilbert Burnet (1825). The History of the Reformation of the Church of England ... in Six Volumes (in Latin). Vol. I, Part II. London: W. Baynes and Son. p. 153.
Reiss, Sheryl E. (2012) [2012]. "12". In Burke, Jill (ed.). Rethinking the High Renaissance: The Culture of the Visual Arts in Early Sixteenth-Century Rome, "Pope Clement VII and the Decorum of Medieval Art". Burlington, VT: Ashgate Publishing Company. p. 289. ISBN978-1409425588. Retrieved 29 September 2017.
Grubb, J.S. (August 2006). "The Pontificate of Clement VII. History, Politics, Culture, edited by Kenneth Gouwens and Sheryl E. Reiss". Renaissance Studies. 20 (4): 596–598. doi:10.1111/j.1477-4658.2006.00214.x.
Rabin, Sheila (17 September 2018). Zalta, Edward N. (ed.). The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University – via Stanford Encyclopedia of Philosophy.
