Lua APA (7ú heag.)
Ringer, T. M. (2002). Group action: The dynamics of groups in therapeutic, educational and corporate settings. Jessica Kingsley.
Lua i Stíl Chicago (17ú heag.)
Ringer, T. Martin. Group Action: The Dynamics of Groups in Therapeutic, Educational and Corporate Settings. London: Jessica Kingsley, 2002.
Lua MLA (9ú heag.)
Ringer, T. Martin. Group Action: The Dynamics of Groups in Therapeutic, Educational and Corporate Settings. Jessica Kingsley, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.