* ''[http://www.amazon.com/Demonologist-Extraordinary-Career-Lorraine-Warren/dp/0595246184/ref=pd_bbs_sr_1/002-0955529-1470425?ie=UTF8&s=books&qid=1175243620&sr=1-1 The Demonologist: The Extraordinary Career of Ed and Lorraine Warren]'' by Gerald Brittle. (Please read with caution).
* Dr. Kurt Koch and Dr. Alfred Lechler. ''Occult Bondage and Deliverance: Advice for Counselling the Sick, the Troubled and the Occultly Oppressed''. Transl. from the German and published by Kregel Publications, Grand Rapids, MI, 1971. (198 pp.) ISBN 0825430062
: (By noted Lutheran German theologian and evangelist Kurt E. Koch (1913-1987), along with psychiatrist Dr. Alfred Lechler, both well acquianted with the other's field).
* ''[http://www.apostasynow.com/wots/Contents.html War on the Saints]'' by Jessie Penn-Lewis. (A classic Protestant/Pentecostal work).