Machin, D., Day, S., & Green, S. B. (2006). Textbook of clinical trials (2nd ed.). Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Machin, David, Simon Day, agus Sylvan B. Green. Textbook of Clinical Trials. 2nd ed. Chichester, West Sussex, England: Wiley & Sons, 2006.
Lua MLA (9ú heag.)Machin, David, et al. Textbook of Clinical Trials. 2nd ed. Wiley & Sons, 2006.
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