Napier, R. W. (1983). Making groups work: A guide for group leaders. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Napier, Rodney W. Making Groups Work: A Guide for Group Leaders. Houghton Mifflin, 1983.
Lua MLA (9ú heag.)Napier, Rodney W. Making Groups Work: A Guide for Group Leaders. Houghton Mifflin, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.