Co-published by the National Association of Social Workers and Oxford University Press, the 20th edition of the Encyclopedia of Social Work (2008) contains four hundred subject entries and two hundred brief biographies of key figures in the history of social work.

With 110 articles and entries, this book provides a comprehensive overview of social work with groups from its initial development to its astounding range of diverse practice today with many populations in different places. The articles have been written by social workers trained in the group approach from the United States, Canada, England, Australia, Spain and Japan, and all involved are well known group workers, acknowledged as experts in the area.

The Encyclopedia offers an interdisciplinary perspective into these and many other social problems that are a continuing concern in our lives, whether we confront them on a personal, local, regional, national, or global level.