Publisher: Routledge ISBN 13: 9780415743716. Author: Paul Wilkins ISBN 10: 0415743710. Title: Person-Centred Therapy (100 Key Points) Item Condition: New. Used-Very Good: The book will be clean without any major stains or markings, the spine will be in excellent shape with only minor creasing, no pages will be missing and the cover is likely to be very clean.