Howick, J., Bishop, F., Heneghan, C., Wolstenholme, J., Stevens, S., Hobbs, R., & Lewith, G. (2013). Placebo use in the United kingdom: Results from a national survey of primary care practitioners. Public Library of Science.
Lua i Stíl Chicago (17ú heag.)Howick, J., F. Bishop, C. Heneghan, J. Wolstenholme, S. Stevens, R. Hobbs, agus G. Lewith. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.
Lua MLA (9ú heag.)Howick, J., et al. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.
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