Derek Prince 
They Shall Expel Demons [EPUB ebook] 
What You Need to Know about Demons–Your Invisible Enemies

What are demons? How do demons gain entry into people’s lives? Do Christians need deliverance from demons? In this practical, comprehensive handbook on deliverance, author and Bible expositor Derek Prince addresses the fears and misconceptions often associated with the subject of demons. By sharing his own struggles with unseen forces, he encourages believers to become equipped to take action against these evil beings. He exposes their characteristics, activities, and entry points, and offers solid, down-to-earth advice on how to receive and minister deliverance–and how to remain free.