I wish to thank all those who have been involved in
the exorcism rituals for permission to "use" their "cases"; to
all those who have helped me in various ways, by advice or
narration, both lay people and clergy of several
denominations; to authorities who have allowed me to quote; to
librarians and assistants in the libraries I have used and to
Internet providers and their relevant source material.
If any acknowledgement has not been made (in the
text) to relevant authors and/or publishers I apologize as I
have made every effort to trace them.