APA-viite

Flegel, K. (2012). Health care workers must protect patients from influenza by taking the annual vaccine. Canadian Medical Association.

Chicago-tyylinen lähdeviittaus

Flegel, Ken. Health Care Workers Must Protect Patients From Influenza By Taking the Annual Vaccine. Canadian Medical Association, 2012.

MLA-viite

Flegel, Ken. Health Care Workers Must Protect Patients From Influenza By Taking the Annual Vaccine. Canadian Medical Association, 2012.

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