Reichard, B. D., & Siewers, C. M. (1992). The small group trainer's survival guide. Sage.
Lua i Stíl Chicago (17ú heag.)Reichard, Birge D., agus Christiane M. Siewers. The Small Group Trainer's Survival Guide. London: Sage, 1992.
Lua MLA (9ú heag.)Reichard, Birge D., agus Christiane M. Siewers. The Small Group Trainer's Survival Guide. Sage, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.