APA-viite

Duffy, J. (1993). From humors to medical science: A history of American medicine. Urbana: University of Illinois Press.

Chicago-tyylinen lähdeviittaus

Duffy, John. From Humors to Medical Science: A History of American Medicine. Urbana: University of Illinois Press, 1993.

MLA-viite

Duffy, John. From Humors to Medical Science: A History of American Medicine. Urbana: University of Illinois Press, 1993.

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