Torgerson, D. J. (2001). Contamination in trials: Is cluster randomisation the answer? BMJ.
Čikaški stil citiranjaTorgerson, David J. Contamination in Trials: Is Cluster Randomisation the Answer? BMJ, 2001.
MLA način citiranjaTorgerson, David J. Contamination in Trials: Is Cluster Randomisation the Answer? BMJ, 2001.
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