Treweek, S., Lockhart, P., Pitkethly, M., Cook, J., Kjeldstrom, M., Johansen, M., . . . Mitchell, E. (2013). Methods to improve recruitment to randomised controlled trials: Cochrane systematic review and meta-analysis. BMJ Publishing Group.
Chicago-viite (17. p.)Treweek, S., et al. Methods to Improve Recruitment to Randomised Controlled Trials: Cochrane Systematic Review and Meta-analysis. BMJ Publishing Group, 2013.
MLA-viite (9. p.)Treweek, S., et al. Methods to Improve Recruitment to Randomised Controlled Trials: Cochrane Systematic Review and Meta-analysis. BMJ Publishing Group, 2013.
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