Dyfyniad APA

Hart, F. D. (1995). Placebo effects. Placebos used not to be used in studies. BMJ Group.

Dyfyniad Arddull Chicago

Hart, F. D. Placebo Effects. Placebos Used Not to Be Used in Studies. BMJ Group, 1995.

Dyfyniad MLA

Hart, F. D. Placebo Effects. Placebos Used Not to Be Used in Studies. BMJ Group, 1995.

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