1. The ethics of giving placebos;Bok, Sissela,1974
2. The pharmacology of placebos;Wolf, Stewart,1959
3. The doctor himself as therapeutic agent;Houston, W.R.;Annals of Internal Medicine,1938
4. The power of the sugar pill;Evans, Frederick J.,1974
5. The placebo effect: a neglected asset in the care of patients;Today, Psychology,1975