Smith, P. B. (1980). Small groups and personal change. Methuen.
Cita Chicago (17th ed.)Smith, Peter B. Small Groups and Personal Change. London: Methuen, 1980.
Cita MLA (9th ed.)Smith, Peter B. Small Groups and Personal Change. Methuen, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.