Wilson, G. L., & Hanna, M. S. (1993). Groups in context: Leadership and participation in small groups (3rd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Wilson, Gerald L., agus Michael S. Hanna. Groups in Context: Leadership and Participation in Small Groups. 3rd ed. New York: McGraw-Hill, 1993.
Lua MLA (9ú heag.)Wilson, Gerald L., agus Michael S. Hanna. Groups in Context: Leadership and Participation in Small Groups. 3rd ed. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.