Hechter, M., & Opp, K. (2001). Social norms. Russell Sage Foundation.
Chicago Style aipamenaHechter, Michael, and Karl-Dieter Opp. Social Norms. New York: Russell Sage Foundation, 2001.
MLA aipamenaHechter, Michael, and Karl-Dieter Opp. Social Norms. Russell Sage Foundation, 2001.
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