Kurtz, Linda Farris
Self-help and support group: a handbook for practitioners
Sage Publications, 1997
 Buku Teks
Social identity processes in organizational contexts
edited by Michael A. Hogg and Deborah J. Terry
Psychology Press, 2001
 Buku Teks SO
Small groups: studies in social interaction
Alfred A. Knoff, 1955
 Buku Teks SO
Brieland, Donald
Contemporary social work : an introduction to social work and social welfare
McGraw-Hill, 1975
 Buku Teks
Kamerman, Sheila B.
Social services in the United States
Temple University Press, 1976
 Buku Teks