•
Visual Perception of Form (1970) •
Biographical Dictionary of Psychology (1984) •
Magical Thinking and Parapsychology. In
A Skeptic’s Handbook of Parapsychology. Edited by
Paul Kurtz. Prometheus Books. pp. 685–700. •
Eponyms in Psychology: A Dictionary and Biographical Sourcebook (1987) •
Anomalistic Psychology: A Study of Magical Thinking [with Warren H. Jones] (1989) ==References==