APA-čujuhus (7. p.)
Campbell, M. J., & Walters, S. J. (2014). How to design, analyse and report cluster randomised trials in medicine and health related research. Wiley.
Chicago-čujuhus (17. p.)
Campbell, Michael J., juo Stephen John Walters. How to Design, Analyse and Report Cluster Randomised Trials in Medicine and Health Related Research. Chichester, England: Wiley, 2014.
MLA-čujuhus (9. p.)
Campbell, Michael J., juo Stephen John Walters. How to Design, Analyse and Report Cluster Randomised Trials in Medicine and Health Related Research. Wiley, 2014.
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