The Encyclopedia of Demons and Demonology by Rosemary Ellen Guiley: Used
“The Encyclopedia of Demons and Demonology by Rosemary Ellen Guiley is a comprehensive study guide published by Checkmark Books in 2009. This illustrated trade paperback book, measuring 11 inches in length and 8.5 inches in width, contains 302 pages of information on the topic of demons. Guiley, Rosemary Ellen, and John Zaffis are the authors of this book, with Zaffis providing a foreword. The publication also features illustrations, making it a valuable resource for anyone interested in the world of demonology.”