Lindsay, T., & Orton, S. (2011). Groupwork practice in social work (2nd ed.). Learning Matters.
Lua i Stíl Chicago (17ú heag.)Lindsay, Trevor, agus Sue Orton. Groupwork Practice in Social Work. 2nd ed. Exeter: Learning Matters, 2011.
Lua MLA (9ú heag.)Lindsay, Trevor, agus Sue Orton. Groupwork Practice in Social Work. 2nd ed. Learning Matters, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.