This book is available for free as a digital download. Many people, however, prefer to have a physical copy. GBN does not sell items, but this book may be purchased from Chula Vista books at the following link. https://www.chulavistabooks.com/products/10514-the-work-of-the-holy-spirit-in-redemption/
Or you may contact them directly.
Phone
205 338-1843