The Confessions of St. Augustine

Augustine of Hippo

The Early Church (The Pelican History of the Church, #1)

Henry Chadwick

The Reformation: A History

Diarmaid MacCulloch

Reading the Church Fathers: A History of the Early Church and the Development of Doctrine

James Papandrea

On the Freedom of a Christian

Martin Luther

The Orthodox Church

Timothy Ware

Reformation Thought: An Introduction

Alister E. McGrath

Why Study the Past?: The Quest for the Historical Church

Rowan Williams

Martin Luther: Renegade and Prophet

Lyndal Roper

For the Life of the World: Sacraments and Orthodoxy

Alexander Schmemann

A Little Book on the Christian Life

John Calvin

On the Incarnation

Athanasius of Alexandria

The Stripping of the Altars: Traditional Religion in England, 1400-1580

Eamon Duffy

The Orthodox Way

Kallistos Ware

Mere Christianity

C.S. Lewis