John O Willis

John O Willis is the author of "Essentials of IDEA for Assessment Professionals", "Essentials of DAS-II Assessment", "Essentials of Idea for Assessment Professionals" and "Pseudoscience".

Books by John O Willis

Essentials of DAS...
Dumont, Ron
Electronic book text:

Pseudoscience
Kaufman Allison B.
Digital (delivered electronically): $52.95

Essentials of DAS...
Dumont, Ron
Paperback: $57.25

Essentials of IDE...
McBride, Guy
Electronic book text: