1. Birnbaum, M.L. and Cicchetti, A. (2008) ‘The Power of Purposeful Sessional Endings in Each Group Encounter’, Social Work with Groups, 23(3): pp. 37–52
2. Corey, G. (2011) Theory and Practice of Group Counseling. 8th edn (Belmont, CA: Brooks/Cole, Cengage Learning), Chapter 4 ‘Early Stages in the Development of a Group’, pp. 94–120
3. Whitaker, D. S. (1985) Using Groups to Help People (London: Routledge and Kegan Paul), Chapter 12 ‘Problems, Opportunities, Comings and Goings During the Established Phase’, pp. 317–360