The material on this website is drawn from numerous sources. Below are those that were regularly consulted in the composition of events and biographies on the timeline.
Betz, Hans Dieter, ed. Religion Past and Present. 14 vols. Leiden: E.J. Brill, 2007‒2013.
Bietenholtz, Peter G. Contemporaries of Erasmus: A Biographical Register of the Renaissance and Reformation. 3 vols. Toronto: University of Toronto Press.
Brecht, Martin. Martin Luther. 3 vols. Translated by James L. Schaaf. Philadelphia: Fortress Press, 1985‒1993.
Grendler, Paul F., ed. Encyclopedia of the Renaissance. 6 vols. New York: Scribner, 1999.
Hildebrand, Hans, ed. The Oxford Encyclopedia of the Reformation. 4 vols. Oxford: Oxford University Press, 1996.
Kelly, J.N.D. Oxford Dictionary of Popes. Oxford: Oxford University Press, 1986.
Kittelson, James. Luther the Reformer: The Story of the Man and His Career. Minneapolis: Augsburg Publishing House, 1986.
Lindberg, Carter, ed. The Reformation Theologians: An Introduction to Theology in the Early Modern Period. Oxford: Blackwell, 2002.
Steinmetz, David C. Reformers in the Wings: From Geiler von Kaysersberg to Theodore Beza. Oxford: Oxford University Press, 2001.
Strayer, Joseph, ed. Dictionary of the Middle Ages. 13 vols. New York: Scribner, 1982‒1989.