Check out these sources that proved extremely useful to my portfolio!
- MacCulloch, Diarmaid. Christianity: The First Three Thousand Years. United States: Penguin Publishing Group, 2010.
- Azkoul, Michael (1994). “What are the differences between Orthodoxy and Roman Catholicism”. The Orthodox Christian Witness. 27 (48). [This article detailed the Great East/West Schism and the opposing doctrine of beliefs for each.]
- Bettenson, Henry and Chris Maunder, “Documents of the Christian Church” eds. (3rd edition, Oxford University Press, 1996)
- Karras, Ruth Mazo. “The Christianization of Medieval Marriage,” in Christianity and Culture in the Middle Ages: Essays in Honor of John Van Engen. David C. Mengel and Lisa Wolverton, eds. (University of Notre Dame Press, 2014)