Giai đoạn thứ tư của quá trình thực hiện liên quan đến việc hành động và thực sự làm các công việc được xác định trong kế hoạch thực hiện. Làm việc bình thường, kế hoạch liên quan đến việc lựa chọn nhà cung cấp và đàm phán các thỏa thuận hợp đồng, chẳng hạn như thoả thuận ràng buộc pháp lý giữa các nhà cung cấp và tổng công ty. | Wiley Series in Clinical Psychology Family Therapy Concepts Process and Practice 2nd Edition Alan Carr FAMILY THERAPY Wiley Series in CLINICAL PSYCHOLOGY Adrian Wells Series Advisor School of Psychological Sciences University of Manchester UK Alan Carr Family Therapy Concepts Process and Practice Second Edition Martin Herbert Clin ical Child Psychology From Theory to Practice Third Edition Graham . Davey and Adrian Wells Editors Worry And Its Psychological Disorders Theory Assessment And Treatment Titles published under the series editorship of J. Mark G. Williams Series Editor School of Psychology University of Wales Bangor uK Richard G. Moore and Anne Garland Ross G. Menzies and Padmal de Silva Editors David Kingdon and Douglas Turkington Editors Hermine L. Graham Alex Copello Max J. Birchwood and Kim T. Mueser Editors Jenny A. Petrak and Barbara Hedge Editors Gordon . Asmundson Steven Taylor and Brian J. Cox Editors Kees van Heeringen Editor Cognitive Therapy for Chronic and Persistent Depression Obsessive-Compulsive Di sorder Theory Research and Treatment The Case Study Guide to Cognitive Behaviour Therapy of Psychosis Substance Misuse in Psychosis Approaches to Treatment and Service Delivery The Trauma of Sexual Assault Treatment Prevention and Practice Health Anxiety Clinical and Research Perspectives on Hypochondriasis and Related Conditions Understanding Suicidal Behaviour The Suicidal Process Approach to Research Treatment and Prevention Craig A. White Cognitive Behaviour Therapy for Chronic Medical Problems A Guide to Assessment and Treatment in Practice Steven Taylor Unders tanding and Treating Panic Disorder Cognitive-Behavioural Approaches Alan Carr Family Ther apy Concepts Process and Practice A list of earlier titles in the series follows the .