The books used in producing the series Communio Santorum: History of the Christian Church
- Pagan Rome and the Early Christians Benko, Stephen (Indiana University Press) 1984
- Church History in Plain Language, 2nd Edition Shelley, Bruce L. (Thomas Nelson Publishers) 1982
- History of the Christian Church Schaff, Philip (WM. B. Eerdmans Publishing Company) 1910
- The History of Christianity: First Century to the Present Day Dowley, Tim (Lion Publishing) 1977
- Christianity and the Hellenistic World Nash, Ronald H. (Zondervan) 1984
- The Spreading Flame Bruce, F.F. (Wm. B. Eerdmans Publishing Company) 1958
- Eusebius’ Ecclesiastical History Boyle, Isaac (Baker Book House) 1955
- Miller’s Church History Miller, Andrew (Bible Truth Publishers) 1980
- Christianity through the Centuries: A History of the Christian Church Cairns, Earle E. (Academie Books) 1954
- How Christianity Changed the World Schmidt, Alvin J. (Zondervan) 2001
- The 100 Most Important Events in Christian History Curtis, A. Kenneth; Lang, J. Stephen; Petersen, Randy (Fleming H. Revel) 1991
- Pagans and Christians Fox, Robin Lane (Alfred A. Knopf, Inc.) 1986
- A History of Christianity, Latourette, Kenneth Scott (Harper & Row) 1953
- Heroes & Heretics: Pivotal Moments in 20 Centuries of the Church Campbell, Iain D. (Christian Focus) 2004
- Heresies: The Image of Christ in the Mirror of Heresy and Orthodoxy from the Apostles to the Present Brown, Harold O. J. (Baker Book House) 1984
- The Apostolic Fathers, 2nd Edition Harmer, J.R.; Holmes, Michael W.; Lightfoot, J.B. (Baker Book House) 1989
- Creeds of the Churches: A Reader in Christian Doctrine from the Bible to the Present, 3rd Edition Leith, John H. (John Knox Press) 1963
- The History of the Church in Art, Giorgi, Rosa, Getty Publications; Los Angeles, California; 2008
- Fistful of Heroes, Pollock, John C., Christian Focus Publications; Ross-shire, Scotland; 1998
- The Oxford Illustrated History of the Crusades, Riley-Smith, Jonathan, Oxford University Press; Oxford, New York; 1995
- Church History Vols. 1 & 2, Ferguson, Everett; Zondervan: 2005
- The Story of Christianity: Vols 1 & 2, González, Justo L., Harper Collins
- Through the Eye of a Needle, Brown, Peter; Princeton University Press: 2012
- Rediscovering the Church Fathers, Haykin, Michael, Crossway: 2011
- Know the Creeds and Councils, Holcomb, Justin, Zondervan: 2014
- The Christian World, Marty, Martin, The Modern Library 2009
- Christianity: The First 3000 Years, Diarmaid McCullouch. Penguin 2009