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
Blackwell handbook of social psychology: group processes
edited by Michael A. Hogg and R. Scott Tindale
Blackwell, 2003
 Buku Teks SO