Festinger, Leon, 1919-1989
Social pressures in informal groups; a study of human factors in housing
Stanford University Press, 1950
 Buku Teks
Focus groups in social research
by Michael Bloor ... [et al.]
Sage, 2002
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Stangor, Charles
Social groups in action and interaction
Psychology Press, 2004
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Keesing, Roger M.
Kin groups and social structure
Holt, Rinehart and winston, 1975
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Thibaut, John W.
The social psychology of groups
John Wiley and Sons, 1967
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