Thelen, H. A. (1970). Dynamics of groups at work. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Thelen, Herbert Arnold. Dynamics of Groups at Work. Chicago: University of Chicago Press, 1970.
Lua MLA (9ú heag.)Thelen, Herbert Arnold. Dynamics of Groups at Work. University of Chicago Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.