APA引文

Clarke, M., Hopewell, S., & Chalmers, I. (2010). Clinical trials should begin and end with systematic reviews of relevant evidence: 12 years and waiting.

Chicago Style (17th ed.) Citation

Clarke, M., S. Hopewell, and I. Chalmers. Clinical Trials Should Begin and End with Systematic Reviews of Relevant Evidence: 12 Years and Waiting. 2010.

MLA引文

Clarke, M., et al. Clinical Trials Should Begin and End with Systematic Reviews of Relevant Evidence: 12 Years and Waiting. 2010.