*[[Laurent Cleenewerck]], ''His Broken Body: Understanding and Healing the Schism between the Roman Catholic and Eastern Orthodox Churches''(Lulu.com, 2008 ISBN 978-0615183619)*[[Vladimir Lossky]], ''The Mystical Theology of the Eastern Church''(SVS Press, 1997 ISBN 978-0913836316) *[[John Meyendorff]], ''Living Tradition: Orthodox Witness in the Contemporary World'' esp pp64. pp. 64-71 (1978 SVS Press, 1997 ISBN 978-0913836484)*[[Aristeides Papadakis]] ''The Christian East and the Rise of the Papacy'' (1994 SVS Press, 1994 ISBN 978-0881410570)*[[Philip Sherrard]], ''Church, Papacy and Schism: A Theological Inquiry''(Harvey & Co., 1978 ISBN 978-9607120113)*[[Timothy Ware]], ''The Orthodox Church'', 2nd ed. (Penguin, 1993 ISBN 0140146563)