Cita APA

Stang, A., Hense, H., Jöckel, K., Turner, E. H., & Tramèr, M. R. (2005). Is It Always Unethical to Use a Placebo in a Clinical Trial? Public Library of Science.

Chicago Style Citation

Stang, Andreas, Hans-Werner Hense, Karl-Heinz Jöckel, Erick H. Turner, i Martin R. Tramèr. Is It Always Unethical to Use a Placebo in a Clinical Trial? Public Library of Science, 2005.

Cita MLA

Stang, Andreas, et al. Is It Always Unethical to Use a Placebo in a Clinical Trial? Public Library of Science, 2005.