Transloyalties, Connected Histories and World Christianity during the Period of Decolonization and the Cold War: 1945-1970

The Desert Fathers: Sayings of the Early Christian Monks

The Templars: The Rise and Spectacular Fall of God's Holy Warriors

Church-State Relations in Africa in the Nineteenth and Twentieth Centuries: Mission, Empire, and the Holy See

Dominion: The Making of the Western Mind

The First World War as a Turning Point / Wendezeit Weltkrieg: The impact of the years 1914 -1918 on Church and Mission (with special focus on the Hermannsburg Mission) / Die Auswirkungen der Jahre 1914-1918 auf Kirche und Mission (unter besonderer Berücksichtigung der Hermannsburger Mission)

Saints and Sinners: A History of the Popes; Fourth Edition

Augustine of Hippo and Martin Luther on Original Sin and Justification of the Sinner

Thomas Becket: Warrior, Priest, Rebel, Victim: A 900-Year-Old Story Retold

Tracing the Jerusalem Code: Volume 2: The Chosen People Christian Cultures in Early Modern Scandinavia (1536–ca. 1750)

Bonhoeffer: Pastor, Martyr, Prophet, Spy

A History of Christianity in Asia, Africa, and Latin America, 1450-1990: A Documentary Sourcebook

Strange Fire: The Danger of Offending the Holy Spirit with Counterfeit Worship

They Like Jesus but Not the Church: Insights from Emerging Generations

A History of Christianity: The First Three Thousand Years

The Confessions

Malachi's Message to God's Church Today: A message to God's true Church

The Evil Creator: Origins of an Early Christian Idea

Christianity: A Global History

The Missionary Position: Mother Teresa in Theory and Practice