(1973). Small group behavior. Sage.
Lua i Stíl Chicago (17ú heag.)Small Group Behavior. Beverly Hills, Calif: Sage, 1973.
Lua MLA (9ú heag.)Small Group Behavior. Sage, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.