Bulpitt, C. J. (1983). Randomised controlled clinical trials. Martinus Nijhoff Publishers ; Distributors for the U.S. and Canada, Kluwer Boston.
Chicago-referens (17:e uppl.)Bulpitt, Christopher J. Randomised Controlled Clinical Trials. The Hague : Hingham, MA, USA: Martinus Nijhoff Publishers ; Distributors for the U.S. and Canada, Kluwer Boston, 1983.
MLA-referens (8:e uppl.)Bulpitt, Christopher J. Randomised Controlled Clinical Trials. Martinus Nijhoff Publishers ; Distributors for the U.S. and Canada, Kluwer Boston, 1983.
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