Bill has contributed content to:
Color Choreography Foundational Studies, Investigations, and Discourses in Color Theory by Alan Burner, Cengage, 2008
How to Grow as an Illustrator by Michael Fleishman, Allworth Press, 2007.
Dynasty of Light by Alan McManus Burner, Thompson, 2006.
Exploring Illustration by Michael Fleishman, Cengage Delmar Learning, 2003