Wilson, G. L., & Hanna, M. S. (1993). Groups in context: Leadership and participation in small groups (3rd ed.). McGraw-Hill.
Cita Chicago (17th ed.)Wilson, Gerald L., i Michael S. Hanna. Groups in Context: Leadership and Participation in Small Groups. 3rd ed. New York: McGraw-Hill, 1993.
Cita MLA (9th ed.)Wilson, Gerald L., i Michael S. Hanna. Groups in Context: Leadership and Participation in Small Groups. 3rd ed. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.