Barkley, E. F., Major, C. H., & Cross, K. P. (2014). Collaborative learning techniques: A handbook for college faculty (Second edition.). John Wiley.
Lua i Stíl Chicago (17ú heag.)Barkley, Elizabeth F., Claire Howell Major, agus K. Patricia Cross. Collaborative Learning Techniques: A Handbook for College Faculty. Second edition. USA: John Wiley, 2014.
Lua MLA (8ú heag.)Barkley, Elizabeth F., et al. Collaborative Learning Techniques: A Handbook for College Faculty. Second edition. John Wiley, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.