Muhammad: A Critical Biography

The Desert Fathers: Sayings of the Early Christian Monks

The History of Jihad: From Muhammad to ISIS

A History of Religious Ideas, Volume 2: From Gautama Buddha to the Triumph of Christianity

The Critical Qur'an: Explained from Key Islamic Commentaries and Contemporary Historical Research

Visions of Sadhu Sundar Singh of India

The Palestinian Delusion: The Catastrophic History of the Middle East Peace Process

Empire of God: How the Byzantines Saved Civilization

Muhammad: A Very Short Introduction

Rating America’s Presidents: An America-First Look at Who Is Best, Who Is Overrated, and Who Was An Absolute Disaster

The Rise of Islam: A picture story of the origin of one of the world's great religions

Antisemitism: History and Myth

The Hidden History of Women's Ordination: Female Clergy in the Medieval West

Politically Incorrect Guide to Islam (And the Crusades)

A History of Christianity: The First Three Thousand Years

Did Muhammad Exist?: An Inquiry into Islam’s Obscure Origins—Revised and Expanded Edition

Shinto the Kami Way

Confessions of an Islamophobe

Quotes on Hinduism and Hindustan