Eldridge, S., & Kerry, S. M. (2012). A practical guide to cluster randomised trials in health services research. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Eldridge, Sandra, agus Sally M. Kerry. A Practical Guide to Cluster Randomised Trials in Health Services Research. Chichester, West Sussex: John Wiley & Sons, 2012.
Lua MLA (9ú heag.)Eldridge, Sandra, agus Sally M. Kerry. A Practical Guide to Cluster Randomised Trials in Health Services Research. John Wiley & Sons, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.