Style de citation APA (7e éd.)

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.

Style de citation Chicago (17e éd.)

Howick, J., F. Bishop, C. Heneghan, J. Wolstenholme, S. Stevens, R. Hobbs, et G. Lewith. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.

Style de citation MLA (9e éd.)

Howick, J., et al. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.