The product is a used textbook titled “Systems of Psychotherapy” 9th Edition by authors James O. Prochaska and John C. Norcross. Published by Oxford University Press, Incorporated in 2018, this hardcover book covers the subject area of psychology with a focus on psychotherapy in general. With a total of 568 pages, this textbook provides a comprehensive analysis of various systems of psychotherapy through a transtheoretical approach. It is a valuable resource for students and professionals in the field of psychology looking to deepen their understanding of different therapeutic techniques and approaches.