På tro og Are
2010
Animated World Faiths
1998
Divine Women
2012
100% Hindoe?
2016
Heaven on Earth
2004
Christianity: The First 1000 Years
1998
Christianity: The Second Millennium
2000
The Life of Muhammad
2011
Saints and Sinners: Britain's Millennium of Monasteries
2015
Inside Scientology
2018
Religions of the World
1998
Hillsong: A Megachurch Exposed
2022
Extraordinary Rituals
2018
Religious biographies
—
The Root of All Evil?
2006
New Testament History and Literature with Dale B. Martin
2009
Crash Course Religions
2024
In the Name of God: A Holy Betrayal
2023
Life's Rituals
2018
Compass
1988