Theophilus of Antioch: The Life and Thought of a Second-Century Bishop (Lanham, Md.: Lexington Books, 2000).

Surveying The Living Religions: A Student Workbook, Second Edition (Dubuque, Iowa: Kendall/Hunt, 1999 & 2001).

The Comparative Study of Religion: PowerPoint Lecture Slides & Lecture Notebook, Second Edition (Boston, Mass.: Pearson, 2003 & 2005).