Clarke, M., Hopewell, S., & Chalmers, I. (2010). Clinical trials should begin and end with systematic reviews of relevant evidence: 12 years and waiting.
Chicago-viite (17. p.)Clarke, M., S. Hopewell, ja I. Chalmers. Clinical Trials Should Begin and End with Systematic Reviews of Relevant Evidence: 12 Years and Waiting. 2010.
MLA-viite (9. p.)Clarke, M., et al. Clinical Trials Should Begin and End with Systematic Reviews of Relevant Evidence: 12 Years and Waiting. 2010.
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